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-   -   Best Gear Oil for Manual Transmission? (https://www.skyroadster.com/forums/f5/best-gear-oil-manual-transmission-95381/)

coothethird 04-09-2019 02:19 PM

Best Gear Oil for Manual Transmission?
 
As the title says:

What's the best gear oil for a Sky manual transmission?

I know in most circles (read "Miata or Corvette") there is always a sacred lube that helps make the trans shift smoothly. Sometimes it's hype. Sometimes it's glorious. Has anyone found such a lube for the aisin?

wspohn 04-11-2019 12:02 PM

Not for the Aisan, but I used Redline on my Lambo and it improved synchro action quite noticeably. That is what I will eventually put in my Aisan.

coothethird 04-13-2019 11:18 AM

Thanks for the input. Which viscosity of RedLine would you be using? GL-4, since the synchros are brass. Would you go with 75w90?

The miata folks sing the praises of MotorCraft XT-M5-QS in their aisin and mazda transmissions. Makes it an interesting option

wspohn 04-13-2019 11:30 AM

Quote:

Originally Posted by coothethird (Post 1297401)
Would you go with 75w90?

I think that would be the one to try.


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