Review on Enhance Your Engine'S Performance With Rislone Hy-Per Lube HPL201 - 32 Oz,1 Quart by Robert Jackson
Quieted my 7.3L good for me
2001 F250 7.3L diesel, 245k miles.First I used Rislone engine oil treatment, drove 200 miles, changed the oil.I added half a bottle of this on oil fill (15 quarts).
I’ve had 2 neighbors comment on how much quieter my truck is now.
Pros
- I have noticed a slight loss in gas mileages because Hy-Per Lube is a thick viscosity oil.
Cons
- No sub for full synthetic regularly changed.
