Hello all,

Is it safe to use a product such as HEET in the FIT (gas tank)? I searched around for an answer, but was unsuccesful. Thanks in advance!

 

The stuff is just alcohol. Fits are certified to run on 10% ethanol from the pump. A can of Heet isn't going to harm anything.

 

There are a number of people that use HEET up north as a means of absorbing moisture in the fuel lines and tank... It will save your fuel pump and fuel injectors from rust and corrosion.... SilverBullet uses it pretty regularly... If my tank isn't filled to the top and I am not planning to drive for awhile I add it to my tank if the weather is cold enough that condensation would be a problem.

 

Thank you both! I just got the fit two months ago and am being super careful about what I put in it

 

My car is going on 2 years old so I waited a year before I added it. I use Iso-heet and only a half a bottle to a full tank. Your car is too new so just make sure you keep the tank full, especially on real cold or rainy days. With different temps and humidity it can cause fuel separation mainly in the spring and fall in between seasonal fuels.

It will not hurt your car unless you use too much.. My mpg goes up after the tank with iso-heet.