Quote:
Originally Posted by speede5
I did a Sea foam treatment on and it cleaned up the valves somewhat as I had a couple leaking. The car ran and would just miss a little bit now and then, as one cylinder would misfire from time to time. Doesn't take much carbon to break the seal on a valve seat.
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I did one recently and it was surprising how smooth the vehicle seemed right away. A few hundred km later, it's a little rough again, but still noticeably smoother than it was before the treatment. It's far surperior to fuel injector cleaner and octane booster.
I did it mainly because seafoam claims to help get rid of water in the engine and gas tank. I'm planning on using seafoam a little more regularly on my higher mileage cars.