MPG anyone have problems like me?

[falcon428]

Originally Posted by SFC1984

I think people are more willing to blame new emissions controls and thinking less of the other big factor, USLD.

You could take a 5.9 24v Cummins and eek out around 20 mpg on regular diesel fuel. Take the same truck and put in a tank of USLD and see the mileage drop. Happened to ours when the big switch to USLD was made back around '06-'07.

I've said it before and I'll say it again, I don't know what the deal is with the DPF and regen process on some of your trucks, but mine has never lost a huge amount of mileage on a regen. The last regen it had, I flogged the piss out of it. WOT on and off for a good 20-30 mins. and I lost, AT THE MOST, .5 mpg. I watched that gauge the entire time.

Thats another part of the emmissions debacle ULSD, I agree with you there, I started noticing a slight lose when ULSD was put in all the pumps, wasnt sure if it was the fuel or the ole truck and 250,000+ miles on it.