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Old 06-08-2017, 05:59 PM
65beam 65beam is offline
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Warren,
The sulfur-phosphorus compound used for the extreme pressure additive is why you never want to add a conventional gear oil to a transmission that has parts made of yellow metals. This starts a corrosion of parts such as syncros that can't be stopped. If you don't know if the gear oil has sulfur-phosphorus in it just smell it real good. The smell of sulfur is hard to miss.
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