1EVLC7 Posted August 13, 2007 Share Posted August 13, 2007 Engine Crankcase FlushingGeneral Motors Corporation does not endorse or recommend engine crankcase flushing for any of its gasoline engines. Analysis of some of the aftermarket materials used for crankcase flushing indicate incompatibility with GM engine components and the potential for damage to some engine seals and bearings. Damage to engine components resulting from crankcase flushing IS NOT COVERED under the terms of the New Vehicle Warranty. Link to comment Share on other sites More sharing options...
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