its good to use the cleaners once in a while. no reason to run it in frequently.

 

RESTORE is good quality stuff. My Dad uses it in his 79 Chevy. Stock bottom end w/ probably 300k or so. The stock cylinder heads got a good refresh along w/ a Edelbrock IM, Comp cam, and a Holley 4 barrel carb.

All cylinders fire within 3 psi of each other. Keep on using it. Stay away from the cheap-o dollar additives.