Review on High Mileage Engine Treatment: Restore Your Vehicle'S Performance With Rislone 16.9 Oz! by Jim Ball
goodb for internal cleaning
I have used this in all used cars i have bought over the years-- for at least the first 2--- 3000--mile changes to clean sludge and gunk--it has worked good everytime for me--quieted some when it unblocked oil passages
Pros
- Help my engine a lot
Cons
- Can be inconvenient to use
