Originally Posted by gr8gatzby
Acquired a high mileage LS460 averaging far below EPA ratings. Ran back to back BG Platinum, RP, and Seafoam in my first 3 tanks and now I'm up to EPA rated mpg. Not sure which additive did the best work though.
I hope you changed your oil after those 3 tanks. Lot of mechanics will tell you to change it after 1 can. It really cleans things up so there is a lot of junk floating around.