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Oil & Engine Additives

Seafoam--can't believe what it did to my engine episode 6--Seafoam vs ATF!!

May 2017/6 min/2 products tested

Watch the test ↗

The verdict

He didn't give an outright ranking in this one — the full tested list is below.

Other picks

  • Also noted

    ATF: ATF Havoline

    “with all those powerful detergents from the fluid, it has done a good job, I think, of cleaning up the crankase of this small engine”
    Buy ↗

Everything tested 2

Links go to Todd's own Amazon listings with his affiliate tag intact — this site adds nothing and takes nothing.