those that have switched to a bigger turbo or played with exhaust
housings , what have you seen happen to your mileage

my mileage has dropped lately and not sure why
I suspect the new soy diesel crap we have to run here now but not sure

 

I'm pretty sure my highway mileage has gone up. I can't say for sure though cause it's just to much fun to play with this ksb-1.

 

Mine went up a bit cruising with the lag pig B1!!! Towing was down a bit!

Chris

 

Hey Agades,

If you're running bio then you can expect to get 8% less mpg for 100% bio. So, if you're running B20, then you can expect to get 8% less mpg on 20% of your fuel. That should give you the net effect of losing about 1.6MPG.

Walt_Mink

 

Well it is very hard for me to tell because of different driving habits/conditions and mods. But I averaged 19.1mpg on a 400 mile Interstate trip a few weeks ago. II SPS66, TST(twins) on 3/3, 315s, 48re, 3.73 and cruise on 74mph. This is not anywhere near the high numbers some post, but that is the best I have ever got. And more than I thought I would ever see in this truck. Before the II SPS66, stock turbo and HOT Juice/Attitude on 3/3 would normally be around 16.5 - 17mpg for same trip.

 

not sure if its B20 or what
I just know our wonderful leaders signed a bill that we have to have a certain percentage of soy diesel
that was about the same time I swapped turbos and noticed about 2-3 mpg loss

 

Don't be too upset about it - it's a fantastic top end lube that'll keep your motor happy for a long, long time. Low sulfur be damned! You should also be proud to be doing something to reduce our dependence on foreign oil. To add to all that, you're also supporting our farmers.

Man - I love BioDiesel.