sure (long) posted by robo (sebring1970) on December 13, 2006 at 07:38 AM
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as a group they are just bandaids. I have been using Marvel MO in a high mileage creaky Ford 1 ton with some success. I rarely drive it, only a few hundred miles a year and then only short distances at <30 mph. After it developed a nasty knock a year ago, I thought it might be sludged up. Put in some MMO (half the recommended amount in the engine oil) and it has smoothed out nicely. But it's still an old tired truck, just quieter.