| Seafoam is great, I use it about twice a year on my 01 GMC sierra. It works best if you pull a vacuum line(brake booster works nice) and let it suck about half the can down while running the engine at 3-4k, shut the engine off and let sit for an hour, start it up and smoke the neighborhood out.
Also it is good to run quality branded fuel, ie shell, mobil, Amoco, Chevron. |