Chevy and GMC Duramax Diesel Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
439 Posts
Discussion Starter #1
Can someone explain to me what exactly "winter fuel" is? Why does it yield worse fuel economy? Since I got EFI in my truck I am able to get 18.7's in BC from the lower mainland to Kamloops and back with fuel from there and fuel from here. I always see people on these forums say theres a solid 1-2+ MPG drop when "winter fuel" is being used.

Is there winter fueld in BC? How does one know they are using winter fuel? When will we see summer fuel? Why does it even exist?

Last tank I somehow got a terrible 15.75MPG, which is the worse I have ever gotten with Kory's EFI tunes so far. That's why I'm curious if maybe some stations I go to use said fuel.
 

·
Reign in Blood
Joined
·
4,553 Posts
winter fuel is blended with kerosene and other additives to combat gelling. this lowers its thermal efficiency (btu's) thus contributing to lower mpg. i believe winter fuel comes out in october/november depending on location, and disappears around april. anywhere that the weather will be below freezing on a regular basis will run winter fuel.
 
1 - 3 of 3 Posts
Top