[Por_sha911]

I laugh when I see a brand of oil brag that their brand is used by a famous drag racer.
Top drag racers tear down the entire motor after each run!

I am from the stone age (late 1960's - 1970's muscle cars). Back then motor oil was not very high tech. My `67 Chevelle Super Sport ran straight 50 weight. The technology of modern motor oil and the additives already in it is a amazing. I am very hesitant to put additives in since you can screw things up more than fix things.

I've been told motor oil flush can:
-dislodge deposits which will then clog up some other place
-create a problem because the deposits are helping the oil rings seal
-be a problem if it is not completely removed (how do you get it all out?)
-be just snake oil: there is no 'miracle in a can'.

Are they true? Dunno. What I do know is that I am very careful to do oil changes myself with the right oil and a quality filter. The max time on a car that doesn't get a lot of mileage is 1 year. Cheap insurance.