Ive used Seafoam on used cars before and I know they do make a difference on older cars. But for new ones, do they actually have any real benefit? Maybe something like preventing gunk from building up?
its only used to clean up gunk. if anything you can probably use it after 1000 miles after you break in the engine just to clean up any gunk there caused by the break-in period.
Thanks for all the info. I guess I'll just stick to using it on higher mileage vehicles. I just enjoy watching the smoke show that you get when you use it. Hahahahaha.
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