D8 engine oil treatment, For Diesel engines with a motor oil capacity up to 9 quarts; Safely Restore and protect your Car, Truck, Motorcycle and all other engines

I think this stuff actually does at least some of what it says. I used two boxes in a 6.4L Powerstroke it decreased ring seal by a measurable amount. I monitor crankcase pressure with a gauge that reads in cm/h2o (about 70 cm/h2o = 1 psi) and I’m seeing about half the pressure I was before. I initially used it because I had a roller lifter fail and it scored my cam pretty good. Fingers crossed for that cam lobe. Oh and a big middle finger to International for designing an engine where the cam has to be removed from the BACK of the block, jerks!

This is easy to use and it seems to work great. The fumes do not linger and one can will last a while.