Don't knock additives
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Archived from the IMDb Discussion Forums — Automobiles and Transportation
frontiersmantanis — 13 years ago(January 27, 2013 07:38 AM)
Or at least Marvel Mystery Oil. I replaced a quart of motor oil with MMO for the last 500 miles of this oil changes life and when I replaced my filter it looked like tar was coming out of it.
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retpo — 13 years ago(February 06, 2013 11:36 AM)
I'm assuming this tar may have been sludge. Unless you were having a problem with your engine, you're sometimes better off to leave the sludge alone. Let it lie harmlessly in the bottom of the oil pan or anywhere else. Once you loosen it, there is no guarantee that it will all dissolve and drain. Could go somewhere else and clog oil lines scratch moving parts etc.
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Speed_Daemon — 12 years ago(July 18, 2013 09:46 AM)
I don't think I'd be happy about finding tar in my oil filter. Is that really a feature?
Since I have a summer car (2000 Mustang), I use Sta-Bil to keep the gas in the vehicle I'm not using from breaking down, since I can let one or the other sit for as long as 8 months. Aside from that, I let a decent maintenance procedure do what "mysterious" products only claim to do.