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Re: [T3] GL5 - MT1 safe for VW trannies



<x-flowed>>Started checking around and there is a 'new' standard for GL5
which is GL5 - MT1.  Penerite here in Oz has a 80 w 90  GL5 - MT1
available and the manufacturer swore that it was suitable for
(in fact developed for) trannies with copper/brass/bronze components (Copper alloys).
Even says so on the back of the bottle!

If I remember our recent discussion correctly, copper is not the issue, as bronze and brass both have copper. The issue is the percentage of *aluminum* and *zinc* used in the VW brass alloy, and that conventional GL-5 lubricants seem to have adverse effects on the Al and Zi. The question that remains unanswered (I think) is the compatibility with the synthetic GL-5 lubricants.

-Mark Fuhriman

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