Anyone out there using Power Source white or grey? I guess it's safe for use in the 6.7. Used it for 7 years in my 6.0.

 

Power Service you mean? It's all good when used in moderation....just like Crown Royal.

 

Thanks, for the correction. So do you use it, the power service I mean....

 

I use it but haven't noticed any difference for mpg

 

I think it helps with the winter blend a bit. When I use it I fill less often but I have not compared actual results much.

 

I feel it improved my towing mpg about 1 mpg. But, the Slickdiesel, I felt, was important because of the lowering of the sulphur content in diesel. Slickdiesel supposed to be good at replacing the natural lubrication of sulphur. Or so at least that's what I read.

 

Either the Opti Lube or the Ford Cetane additive in mine

Diesel Fuel Improver

 

I have been using the power service(white) in mine all winter and haven't noticed any changes, good or bad.