Thread: Oil for an M410
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Old 05-09-2021, 06:32 PM   #14
VB242
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Originally Posted by spock345 View Post
I am assuming the M410, given its relation to the M40/41 has synchros that are susceptible to GL5 eating them. I don't think there is any friction material.

Although I do wonder how the 4T oil plays with the cone clutch in the overdrive.
It's the sulfur in the GL5 EP gear oil that eats up bronze synchronizers, I made that mistake with my Toyota Matrix but the manual called our GL4 or GL5, Toyota rebuilt the transmission under warranty. The oil was very pretty, like Goldschlager in the drain pan.
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Originally Posted by 240240 View Post
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