I have read a lot on fuel additives and 2 stroke oil, but it refers mostly to the older trucks. I know the newer engines are built to use the ultra low sulfar fuel, but is it OK to use 2 stroke in the 6.7 for some extra lube or will it hurt it?

 

i do with mine but i got deletes. if your truck is stock dont do it.

 

iv never heard of that... how much per tank or how often...

 

they are a thread on this. i give mine about a qt every few tanks.

 

i have never heard of it just helps lube everything up? a freind of mine has an 01 cummins said when he changes his oil he dumps it in his tank with mostly full tank of fuel what u guys say about that on the old or new with deletes

 

i would want it filtered. i dont really want to do it in my common rail.

 

ya i thought it was kinda different just remembered him saying that sojust threw it out there

 

years ago it was common to see guys do this with sawmill power units and equipment around here.

 

I started this thread because I have a stock 2010 (6.7) and I get 13 mpg with winter fuel (16 mpg summer fuel). I have had this 3 months and have over 18000 miles. I was told the 2 stroke would increase mileage. Any other Idea's on how to increase MPG feel free to throw those out as well! Do the Deltes work? Thanks for your help.

 

deletes will work wonders but you need a programmer to keep your truck running. Other wise just unplug the egr connection. you will get a soft code but it wont do harm. It should give you a few more mpgs