Thread: Oil for an M410
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Old 05-09-2021, 07:20 PM   #15
mikep
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Join Date: May 2003
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Quote:
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.
I can try it out.

When I worked on British cars we used sae90 or ATF, depending on how hard it would be used. (atf for abuse, 90 for quiet operation in show cars). And we shifted them into OD without the clutch, under power.
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