I used it for about 170k miles... Good stuff!

The Motorcraft was the only additive that would give my truck a bump in fuel mileage.

 

I use the motorcraft additive and love it. I did notice a little boost in fuel economy with it over other additives. In the winter i mix the cetane boost 50/50 with the anti gel formula motorcraft offers and never had a problem and i live in northern new york 10 min south of canada. Truck stays outside more the time or in a non heated garage

 

Also the motorcraft additive treats 250 gal. For $10 and the the diesel kleen cost the same but only treats 100gal. It probably cost different in other areas bit that's what it is up around here

 

The upside to the Diesel Kleen is that you can find it at almost any truck stop or gas station...I stick with Howes for the real cold weather though.

Thad

 

Yeah, usually hauling and a 8.5 inch lift don't go in the same sentence. Good luck and more power to you!

thad

 

I use the grey bottle Diesel Kleen year around. Runs great.

 

I did try the Kleen in the gray and the motor craft. I didn't see a big difference between the two, just trying to decide which one to stick with. Cold weather is not a real big issue in south Louisiana.

 

I put a bottle of the Gray Kleen in her. Shes been running pretty good since the EGR Delete/ oil cooler replacement.