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Posted by Chriscase [76.212.174.151] on Friday, February 12, 2010 at 00:03:28 :
In Reply to: ZDDP --Shell Rotella T 15w-40 has 1200 ppm in it posted by Bob Stopka in Panama City [173.137.62.244] on Thursday, February 11, 2010 at 20:53:33 :
The heavy metals dissolve the platinum in catalytic converters. Seems even the lead in the crank bearings wrecks cats, once it gets from the bearings into the oil, and out the tailpipe.
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