I received my order of LC20 & FP Plus, added the LC20 to the oil and Fueled up with the FP Plus, have about 200 miles with this in my car, very noticable positive results, freakin engine is smooth and quiet, I'm sorry I didn't try this stuff sooner. I still like Marvel Mystery Oil & Redline SI-1, I get great results with that also, but if you don't mind a few extra bucks, Lube Control products seem to deliver.