I've had multiple mechanics tell me it's "OK".
They all suggested what is, in their opinion, a better product, Cheveron's Techron concentrate.
My Audi mechanic suggested it exclusively. It worked fine, but probably not any better than getting the car out on the open road and blowing the carbon out of it - which, by the way, he also suggested.![]()
I'd be a little concerned about putting a slug of anything into the gas in my high mileage car after reading these posts. OTOH I drive it 30 miles on the freeway twice a day, so maybe it has no carbon scabs!
bg 44k i have found to be the best fuel system cleaner .
Gosh only one mention of Marvel Mystery Oil. Invented in 1923 it is much cheaper then Sea foam and does so much more I have used it for decades. My Father uses it, and it goes back to Crips Trucking that worked in the
Cody, Wyoming area during WW2 they used it. great stuff.
Read about it here: http://www.marvelmysteryoil.com/index.php
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I've used Marvel Mystery Oil on everything from Oiling Air Tools to lubricating mechanical clock gears to Oiling Turntable Motors. It's good stuff. I've never put it in my tank, but when used according to directions, it can't hurt.