First oil change, by book or by dealer?
I recently got an 09 fit base model m/t. I read the section of the onwers manual pertaining to breaking in and service. It recomends not changing the oil until prompted by the in dash display. It makes no mention of having any special break in oil or anything to that effect. My dealer recently called me and told me I should be coming in for an oil change at 4000 mi. Now, since my car has 1400 mi on it and the display still reads 90% oil life, I can't imaging it's going to shoot down to zero at the 4000 miles mark. Is the dealer just trying to hustle work, and will changing the oil before prompted by the display reduce engine longevity by compromising the break in peroiod? Does anyone know if the factory fill is a break in oil?
When I purchased my car, i was given a *free* warranty on behalf of quaker state, that warranties my engine (wristpins, piston-rings, bearings, the whole thing) for 10 years or 300k miles whichever comes first, as long as I change the oil in my fit every 4k miles or 4months, with quaker state oil.
So in order to keep the warranty valid, I'm going to be doing my first oil change at around 3500 miles.
At 2500miles I had to add a quart of oil (to compensate for what the engine burned due to the piston rings breaking-in/sealing).
So in order to keep the warranty valid, I'm going to be doing my first oil change at around 3500 miles.
At 2500miles I had to add a quart of oil (to compensate for what the engine burned due to the piston rings breaking-in/sealing).
Either way i'm not following the book,the gauge, or the sticker in the window, I have a 10 year / 300,000 mile warranty from Quaker State that to keep valid I need to change the oil every 4 months or 4k miles with their oil. I have no problem with doing that for the warranty. I also fall into the extreme driving category, since 80-90% of my driving is in-city, and I live in Houston. I also get several mpg over the epa estimates even under these conditions, and with the a/c running constantly.
For all my future oil changes I will be having blackstone oil analysis done, which in my opinion is the only true way to know how long you can or should use an oil.
Last edited by cloudasc; Nov 21, 2009 at 06:42 PM.
According to Honda Techline the oil should NOT be changed until the oil life shows a 15% or LESS. Correct break-in does not occur if the oil is changed too soon. All documented cases I've seen at out dealer of low fuel economy or high oil consumption have had first oil changes at 3000 miles or less. I recommend following your owner's manual and Maintenance Minder system unless there is compelling evidence to the contrary.
Sounds like bull**** to me. First, the "special break-in oil" is only special because a molybdenum additive assists the break-in process, ie: it helps the engine break in "better" and quicker. (a 10,000-mile break-in period is quick??). Kinda like the way using a particular brand of shampoo "helps" prevent hair loss." (yup, "it won't stop your hair from falling out, but gee, it can't hurt. And it will be awfully clean when it hits the floor...")
Gosh, must be that special Honda alloy they use--- the one that only Honda knows about---- that can only be broken in with this additive in the oil. If this were true my engine would have run dry of oil before achieving "proper break-in", because it was down a quart at 3500 kms and down another quart at 7000 kms. I changed it out at 9500 kms (about 5800 miles) when the mileage minder was telling me I still had 60% oil life remaining.
If the above break-in trajectory were accurate my engine would have not been broken in until around 18,000 kms (just over 11,000 miles), and would not have quit using excessive amounts of oil until then. In this hypothetical scenario, had I went to 15% oil life remaining before changing my oil and not topped up the oil as its level dropped (for fear of diluting the "special break-in oil" with inferior regular oil) I'd have been fighting Honda for a new engine to replace the siezed one under warranty--- and Honda would have weaseled out of the argument by saying I "shouldn't have let my oil run dry."
But since it's not really necessary to run the engine that many miles to achieve proper break-in my engine quit using excessive amounts of oil after about 7000 kms, or 4000 miles. And my fuel economy has not suffered at all. When driving at highway speeds of no more than 60 mph I've achieved just under 40 miles per U.S. gallon, which is 46 miles per imperial gallon. Driving at typical highway speeds of 70 to 75 mph still yields around 32-33 miles per U.S. gallon. Still not too shabby.
Oh, and Honda also sez that if you've owned your Honda for one year and still haven't changed your oil, and still haven't reached 15% oil life remaining, you should change your oil. Hmmmm..... kinda flies in the face of their admonishment to keep their break-in oil inside the engine until it's (by their definition) "properly broken in."
shrug. I'll go according to the manual.

And of course I check the oil level every time I fill it with gas. So far it hasn't used any measurable oil (5,000 miles). If it needed it, I'd add the recommended oil.
Two quarts in 7k kilometers? That sounds excessive all right. (scribble scribble that's 2.4US quarts in 4,300 miles. I'd be visiting the dealer for more than an oil change. It sounds borderline.)

And of course I check the oil level every time I fill it with gas. So far it hasn't used any measurable oil (5,000 miles). If it needed it, I'd add the recommended oil.
Two quarts in 7k kilometers? That sounds excessive all right. (scribble scribble that's 2.4US quarts in 4,300 miles. I'd be visiting the dealer for more than an oil change. It sounds borderline.)
Last edited by Steve244; Nov 21, 2009 at 11:09 PM.
Interesting spin on this topic, especially considering that the reason Honda has stated for this is because the car is sold with Honda's special "break-in" oil in the engine, and (according to them) "if you don't run the engine in with this particular oil until there's only 15% oil life remaining, your engine will not break in properly."
Sounds like bull**** to me. First, the "special break-in oil" is only special because a molybdenum additive assists the break-in process, ie: it helps the engine break in "better" and quicker. (a 10,000-mile break-in period is quick?)
Sounds like bull**** to me. First, the "special break-in oil" is only special because a molybdenum additive assists the break-in process, ie: it helps the engine break in "better" and quicker. (a 10,000-mile break-in period is quick?)
shrug. I'll go according to the manual.

And of course I check the oil level every time I fill it with gas. So far it hasn't used any measurable oil (5,000 miles). If it needed it, I'd add the recommended oil.
Two quarts in 7k kilometers? That sounds excessive all right. (scribble scribble that's 2.4US quarts in 4,300 miles. I'd be visiting the dealer for more than an oil change. It sounds borderline.)

And of course I check the oil level every time I fill it with gas. So far it hasn't used any measurable oil (5,000 miles). If it needed it, I'd add the recommended oil.
Two quarts in 7k kilometers? That sounds excessive all right. (scribble scribble that's 2.4US quarts in 4,300 miles. I'd be visiting the dealer for more than an oil change. It sounds borderline.)
Actually our "quarts" here in Canada are liters, which = 1000milli-liters. But our oil is typically sold in 946 ml plastic containers, so that's what I added each of those two occasions. Of course I do realize I'm splitting hairs here.
Either way, the car DID require me to add a liter twice during the first 7000 clicks--- and then none thereafter. I'm now at over 56,000 kms. Five oil changes later (typically performed at 60% oil life remaining), and no more oil issues to report--- and fuel economy is not suffering.
ahhh, and your miles are kilometers. I get it.
946 ml containers? You guys have officially gone metric by adopting the US quart?!!!!
(I guess you're getting US dipsticks now too. And by dipstick I don't mean tourists
)
946 ml containers? You guys have officially gone metric by adopting the US quart?!!!!

(I guess you're getting US dipsticks now too. And by dipstick I don't mean tourists
)
Last edited by Steve244; Nov 22, 2009 at 10:02 AM.
Here's a question for the maintenance minder skeptics: What does Honda gain by telling you not to change your oil that often? They're effectively reducing the amount of oil changes their dealers do by 2 to 3 times what they would normally do if every owner followed a 3k mile or 5k mile rule, reducing their income.
What I'm saying is, why would they lie?
And if you don't think they're lying, maybe you just think their engineers are wrong. Um ok, this is Honda we're talking about. Number 1 or number 2 car manufacturer in terms of reliability?
So either they're lying or they're wrong. Please provide a logical argument as to why they might be either. Not because you learned as a kid that oil should be changed every 3k no matter what!
What I'm saying is, why would they lie?
And if you don't think they're lying, maybe you just think their engineers are wrong. Um ok, this is Honda we're talking about. Number 1 or number 2 car manufacturer in terms of reliability?
So either they're lying or they're wrong. Please provide a logical argument as to why they might be either. Not because you learned as a kid that oil should be changed every 3k no matter what!
Here's a question for the maintenance minder skeptics: What does Honda gain by telling you not to change your oil that often? They're effectively reducing the amount of oil changes their dealers do by 2 to 3 times what they would normally do if every owner followed a 3k mile or 5k mile rule, reducing their income.
What I'm saying is, why would they lie?
And if you don't think they're lying, maybe you just think their engineers are wrong. Um ok, this is Honda we're talking about. Number 1 or number 2 car manufacturer in terms of reliability?
So either they're lying or they're wrong. Please provide a logical argument as to why they might be either. Not because you learned as a kid that oil should be changed every 3k no matter what!
What I'm saying is, why would they lie?
And if you don't think they're lying, maybe you just think their engineers are wrong. Um ok, this is Honda we're talking about. Number 1 or number 2 car manufacturer in terms of reliability?
So either they're lying or they're wrong. Please provide a logical argument as to why they might be either. Not because you learned as a kid that oil should be changed every 3k no matter what!
The only way Honda could realize a net profit via such a scheme would be if they somehow figured out a way to make their extremely durable engines last not quite as long as they do, yet not shorten engine life enough to be noticed by the public and eventually hurt sales. This is the only reason I can think of that any manufacturer would have for advising a maintenance practice that would actually shorten engine life. Again, not impossible, but not a very likely scenario with a company like Honda.
And of course, dealers would be more likely to insist on more frequent oil changes--- and that you MUST have their service department perform this ultra-high-tech task. I vaguely recall reading at least one instance of this happening to an owner on this forum.
But having said all this, I can only go by personal experience. And being a veteran vehicle owner and Aircraft Maintenance Engineer I know a few things about engine oils and metallurgy. Some basic facts:
1. Engine oils today are much more advanced and protect engines better than the best engine oils available 30 years ago. Especially synthetics.
2. Engines wear characteristics have also improved over the years due to advances in metallurgy.
3. In spite of the above, contaminants in oils from engine wear and condensation still do no good for any engine. In other words, while frequency of oil changes is no longer as dire as it used to be, it's still a good idea to change your oil at least every 5000 miles--- especially if your driving habits consist mainly of short trips starting off on a cold engine.
4. An engine (yes, even a Honda engine) will still break in just fine with regular engine oil--- just like all those other engines do. The same cautions regarding driving habits during break-in of course still apply.
5. I changed my oil at 9500 kms with 50% indicated oil life remaining, and that oil was VERY contaminated. Yet my car broke in just fine, uses no oil and gets decent fuel economy.
I've switched to Castrol Syntec 5W20 synthetic and use only very good quality Napa (actually Wix) oil filters, which also get changed when I change the oil. It's probably (ok, definitely) overkill. But the peace of mind is priceless.
I'm not a snob on the brand of oil, I use Amsoil 5w-30 and a Honda filter but if I didn't work at the dealer pretty much any synthetic oil would work and I would either use the (excellent) WIX/Napa filter or the Walmart Supertech. The supertech filters spec VERY well, filtrate area, spring and valve material, hole size and pressure tests.
I'm glad your engine does well, it is, after all, a Honda and they are very difficult to hurt.
You state that your engine oil was very contaminated at 9600 clicks, did you have it tested or are you basing it on a visual inspection?
I'm glad your engine does well, it is, after all, a Honda and they are very difficult to hurt.
You state that your engine oil was very contaminated at 9600 clicks, did you have it tested or are you basing it on a visual inspection?
Here's a question for the maintenance minder skeptics: What does Honda gain by telling you not to change your oil that often? They're effectively reducing the amount of oil changes their dealers do by 2 to 3 times what they would normally do if every owner followed a 3k mile or 5k mile rule, reducing their income.
What I'm saying is, why would they lie?
And if you don't think they're lying, maybe you just think their engineers are wrong. Um ok, this is Honda we're talking about. Number 1 or number 2 car manufacturer in terms of reliability?
So either they're lying or they're wrong. Please provide a logical argument as to why they might be either. Not because you learned as a kid that oil should be changed every 3k no matter what!
What I'm saying is, why would they lie?
And if you don't think they're lying, maybe you just think their engineers are wrong. Um ok, this is Honda we're talking about. Number 1 or number 2 car manufacturer in terms of reliability?
So either they're lying or they're wrong. Please provide a logical argument as to why they might be either. Not because you learned as a kid that oil should be changed every 3k no matter what!
They get to market a car that is more maintenance free. It's not always the engineers making every decision, but often the bean counters and marketers get their say as well.
Why did VW recommend 105k miles for timing belt replacements for the 1.8T only to have some start breaking at 80-90k miles? Oops. Or why did Toyota not require synthetic oil or shorter change intervals in some Camry engines that ended up sludging? In these cases if you followed the maintenance bible, you put your vehicle at risk. Those that were more anal and choose for whatever reason to do more frequent maintenance saved themselves a lot of hassle.
I'm not a snob on the brand of oil, I use Amsoil 5w-30 and a Honda filter but if I didn't work at the dealer pretty much any synthetic oil would work and I would either use the (excellent) WIX/Napa filter or the Walmart Supertech. The supertech filters spec VERY well, filtrate area, spring and valve material, hole size and pressure tests.
I'm glad your engine does well, it is, after all, a Honda and they are very difficult to hurt.
You state that your engine oil was very contaminated at 9600 clicks, did you have it tested or are you basing it on a visual inspection?
I'm glad your engine does well, it is, after all, a Honda and they are very difficult to hurt.
You state that your engine oil was very contaminated at 9600 clicks, did you have it tested or are you basing it on a visual inspection?
Which manufacturer makes Honda's and Walmart's filters in the states? I ask this because often it's not the same ones as here in Canada. For example, mostly all filters sold at Walmart in Canada are Frams. And Mazda in the states sells a decent filter, but here in Canada they sell cheap Fram filters painted blue and doubled in price.
As for my first oil change, I did not have it tested (although I should have just for proper reference). But having performed a lifetime of oil changes, engine rebuilds and other maintenance on both cars and aircraft I can assure you that what I saw in my oil was far beyond the normal garden-variety contamination, even for an engine that's just broken in.
I knew what Honda recommends regarding break-in period before changing the oil. And I knew that, even if the engine wasn't "completely broken in" at that point, the engine would continue to break in just fine with new oil. But I just didn't feel comfortable leaving such dirty oil as this was inside my engine. Even though Honda's opinion on recommended procedures made me 80% confident that leaving the break-in oil inside the engine until 15% oil-life remaining was ok, I was 100% confident (based on experience and knowledge in the field) that changing the oil at that point was the correct course of action and had no ill side-effects.
They get to market a car that is more maintenance free. It's not always the engineers making every decision, but often the bean counters and marketers get their say as well.
Why did VW recommend 105k miles for timing belt replacements for the 1.8T only to have some start breaking at 80-90k miles? Oops. Or why did Toyota not require synthetic oil or shorter change intervals in some Camry engines that ended up sludging? In these cases if you followed the maintenance bible, you put your vehicle at risk. Those that were more anal and choose for whatever reason to do more frequent maintenance saved themselves a lot of hassle.
Why did VW recommend 105k miles for timing belt replacements for the 1.8T only to have some start breaking at 80-90k miles? Oops. Or why did Toyota not require synthetic oil or shorter change intervals in some Camry engines that ended up sludging? In these cases if you followed the maintenance bible, you put your vehicle at risk. Those that were more anal and choose for whatever reason to do more frequent maintenance saved themselves a lot of hassle.
When Mazda designed the rotary engine (one that, once the earlier designs had all the bugs worked out, was a damn good engine) their engineers knew that the most efficient method for lubricating the apex seals was to pre-mix a 100:1 ratio of 2-cycle oil in the fuel rather than pump a small small quantity of dirty 4-cycle oil out of the oil pan for this purpose. They also knew that a more fool-proof method of delivering this 2-cycle oil would be to gravity-feed it from a reservoir (equipped with a low-oil-level warning light) rather than relying on the owners simply dumping a half-quart of 2-cycle oil into the fuel tank during fill-ups. (The racing community knew this too, and simply discarded the metering pump in favor of pre-mixing).
Instead, Mazda designed an oil metering pump to pull oil from the pan. They knew this oil didn't lube as well or burn as cleanly for this purpose as 2-cycle oil would. They also knew that this metering pump could wear out in time (some lasted over 200,000 miles, others wore out at as little as 150,000, depending on how often the owners changed the oil) and that when this happened an engine rebuild would soon follow because they had no quick and easy method of detecting pump wear.
So why would Mazda choose this inferior system in the first place?
Because:
1. They knew a percentage of customers could not be counted on to add oil to the gas during fill-up, at least not in the proper quantity if at all.
2. They also knew that even if they used a reservoir which gravity-fed an approved 2-cycle oil into the intake system many customers would shun the design as a "cheap 2-cycle" engine.
3. They knew that even though the engine would last longer with a 2-cycle oil feed, the 4-cycle stuff from the pan would still work "okay" and that this would provide a seemingly less-maintenance-involved system--- at least from the public's point of view. All they'd have to do is add a little engine oil from time to time--- not a daunting task since "most owners have the required common sense to check their engine oil level once in a while."
Ultimately, this decision by Mazda was the best one, even if it wasn't the most technically efficient. The marketing department's concerns were legitimate and had to be addressed. The result was a decent and durable engine (I've owned six 1st-gen RX7s over the years, the last two of which I'd installed block-off plates and ran pre-mix instead), but one which had a compromise in the form of a designed-in Achilles heel in the form of a metering pump that could wear out if the oil wasn't changed often enough.
Last edited by Aviator902S; Nov 23, 2009 at 06:50 AM. Reason: grammar errors
They get to market a car that is more maintenance free. It's not always the engineers making every decision, but often the bean counters and marketers get their say as well.
Why did VW recommend 105k miles for timing belt replacements for the 1.8T only to have some start breaking at 80-90k miles? Oops. Or why did Toyota not require synthetic oil or shorter change intervals in some Camry engines that ended up sludging? In these cases if you followed the maintenance bible, you put your vehicle at risk. Those that were more anal and choose for whatever reason to do more frequent maintenance saved themselves a lot of hassle.
Why did VW recommend 105k miles for timing belt replacements for the 1.8T only to have some start breaking at 80-90k miles? Oops. Or why did Toyota not require synthetic oil or shorter change intervals in some Camry engines that ended up sludging? In these cases if you followed the maintenance bible, you put your vehicle at risk. Those that were more anal and choose for whatever reason to do more frequent maintenance saved themselves a lot of hassle.
And Aviator, we're not talking about Mazda or rotary engines here. I owned 2 rotary cars for a total period of about 3 years, constantly reading the message boards for information. Honda reliability is far beyond Mazda, let alone Mazda's rotary. That was the main reason I got rid of my last RX-8. With a mortgage on the way in the near future and kids on the way in a few years I couldn't be worrying about my rotary flooding or a seal breaking off because of carbon buildup... or my clutch pedal breaking, or the transmission going out because it can't take the high rpm, etc. The rotary (and Mazda) faithful are definitely a different breed.
edit:
I decided to research the backgrounds of some of the most popular car company CEOs. Mind you, these are just the current CEOs and I didn't spend the time to search for past CEOs. Maybe most of the Japanese car makers do not in fact hold engineering degrees.
Rick Wagoner, General Motors, B.A. in Economics, MBA (just stepped down)
http://en.wikipedia.org/wiki/Rick_Wagoner
Fritz Henderson, GM, MBA
http://en.wikipedia.org/wiki/Frederick_Henderson
Takashi Yamanouchi, Mazda, degree in Commerce
http://www.mazdausamedia.com/bios/re...sident-and-ceo
Akio Toyoda, Toyota, MBA
http://en.wikipedia.org/wiki/Akio_Toyoda
Carlos Ghosn, Nissan, engineering degrees
http://en.wikipedia.org/wiki/Carlos_Ghosn
Robert Nardelli, Chrysler, B.S. in Business, MBA. CNBC named him one of the "Worst American CEOs of All Time"
http://en.wikipedia.org/wiki/Robert_Nardelli#Chrysler
Takeo Fukui, Honda, B.S. in Applied Chemistry
http://en.wikipedia.org/wiki/Takeo_Fukui
So Fukui doesn't have an engineering degree, but chemistry helps!
Last edited by mike2100; Nov 23, 2009 at 10:53 AM.
And Aviator, we're not talking about Mazda or rotary engines here.
Maybe you weren't, but I was--- as is my right to do so, especially since my point was that even with an auto manufacturer's (even Honda's) predilection for hiring engineers to help design their cars, many decisions made in the design process are compromises in engineering to accommodate other factors.
I owned 2 rotary cars for a total period of about 3 years, constantly reading the message boards for information. Honda reliability is far beyond Mazda, let alone Mazda's rotary.
The earlier normally-aspirated peripheral exhaust port rotaries in the 1st gen RX7s I owned were every bit as reliable and durable as anything from Honda of the same era. Seeing was believing, folks. Later turbo'd and high-compression rotaries lasted no longer than turbo'd piston engines. And the engine used in the RX8 (with it's high compression and side exhaust ports) was an inferior monstrosity that perfectly f***ed up the original design.
That was the main reason I got rid of my last RX-8. With a mortgage on the way in the near future and kids on the way in a few years I couldn't be worrying about my rotary flooding or a seal breaking off because of carbon buildup... or my clutch pedal breaking, or the transmission going out because it can't take the high rpm, etc.
Understandable. I'd have done the same. In fact, this was why I never wanted an RX8 in the first place.
The rotary (and Mazda) faithful are definitely a different breed.
LOL. You say ha like it's a bad thing. But I agree--- rotaries are more suited for aircraft use and for track racing rather than the drag strip. And as for loyalty to Mazda, that's a stretch because the only reason many of us rotary proponents say anything good about Ford-owned Mazda is because they're the only manufacturer to succeed in producing a reliable and durable rotary.
edit:
I decided to research the backgrounds of some of the most popular car company CEOs. Mind you, these are just the current CEOs and I didn't spend the time to search for past CEOs. Maybe most of the Japanese car makers do not in fact hold engineering degrees.
Rick Wagoner, General Motors, B.A. in Economics, MBA (just stepped down)
Rick Wagoner - Wikipedia, the free encyclopedia
Fritz Henderson, GM, MBA
Frederick Henderson - Wikipedia, the free encyclopedia
Takashi Yamanouchi, Mazda, degree in Commerce
Representative Director, President and CEO | MazdaUSAMedia
Akio Toyoda, Toyota, MBA
Akio Toyoda - Wikipedia, the free encyclopedia
Carlos Ghosn, Nissan, engineering degrees
Carlos Ghosn - Wikipedia, the free encyclopedia
Robert Nardelli, Chrysler, B.S. in Business, MBA. CNBC named him one of the "Worst American CEOs of All Time"
Robert Nardelli - Wikipedia, the free encyclopedia
Takeo Fukui, Honda, B.S. in Applied Chemistry
Takeo Fukui - Wikipedia, the free encyclopedia
So Fukui doesn't have an engineering degree, but chemistry helps!
Last edited by Aviator902S; Nov 23, 2009 at 11:30 AM.
I see you are a rotary enthusiast, so I shall provide some context to my argument that Honda engineers can be trusted. "In the realm of daily driven vehicles," not airplanes, drag racers, or any other kind of racer whereby the duty for which the engine is used requires more frequent oil changes.
Do what you want, but if you crack open your oil filer at the first change, you will probably find scary amounts of metal in the filter elements. I would rather pay $25 for a oil and filter change early than to let that junk stay in. $19 for Pennzoil full synthetic and $6 for a filter at Wal Mart. Cheap protection by my reckoning. My Solstice has an element that pulls out, so it is easy to check what's in the filter. Opening the spin-on of a Fit is not hard. Makes a believer of you.
Just have a question about oil changing.
I bought my car as a demo with 3900 km on it, and when I bought it, Honda changed the oil for me. They also reset the maintenance reminder (at that point, it was around 70%). That was less than 3 months ago.
Today, I'm at 9000 km, and my oil life is still at 80%. In the last two fill-ups, I noticed that my fuel economy has gone down. It goes from around 7.0L/100km to about 8.3L/100 km (that's about 33 mpg to 28 mpg). I usually drive 60hwy/40 city (i have a 09 A/T sport)
I've been thinking about switching to synthetic oil and nanofibre filter from amsoil, in my attempt to improve the fuel economy and the acceleration and also with winter coming up here in Toronto.
The fact that I had my first oil change early, does it really affect the fuel economy and maybe the acceleration? Sometimes my Fit struggles to pick up the speed going into highway.
Should I change to synthetic or should I stick with conventional for a while?
I bought my car as a demo with 3900 km on it, and when I bought it, Honda changed the oil for me. They also reset the maintenance reminder (at that point, it was around 70%). That was less than 3 months ago.
Today, I'm at 9000 km, and my oil life is still at 80%. In the last two fill-ups, I noticed that my fuel economy has gone down. It goes from around 7.0L/100km to about 8.3L/100 km (that's about 33 mpg to 28 mpg). I usually drive 60hwy/40 city (i have a 09 A/T sport)
I've been thinking about switching to synthetic oil and nanofibre filter from amsoil, in my attempt to improve the fuel economy and the acceleration and also with winter coming up here in Toronto.
The fact that I had my first oil change early, does it really affect the fuel economy and maybe the acceleration? Sometimes my Fit struggles to pick up the speed going into highway.
Should I change to synthetic or should I stick with conventional for a while?



