04-05-2021, 01:06 PM
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#28
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Senior Member
Join Date: May 2015
Posts: 8,156
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Re: Transmission Oil
Quote:
Originally Posted by Ross F-1
Here is a piece I copied off a different forum, explains things pretty clearly. Note that it applies only to Valvoline's High Performance lubes, they have others that may not qualify.
In that same thread, it was stated that the active sulphates in other GL-5's only corrode/discolor brass when oil temps are in the 250°+ range, not something I'd expect in an old Ford.
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