Gearbox oil 85w-140 ok to use?
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- Learner Driver
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Gearbox oil 85w-140 ok to use?
Na8 - service manual says to use SAE 90 for manual transmission. But I already have some 85w -140. Would it be ok to use instead? Thanks
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- Speed Racer
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Re: Gearbox oil 85w-140 ok to use?
NA8 Owner's Manual from Mazda says to use 75W-90 right across the temperature range, or 80W-90 for above 10 degrees celsius only.
Here's the NA6 Owner's Manual, which is the same for GB oil:
http://www.five-speed.dk/Download/NAOwnersManual.pdf
Here's the NA6 Owner's Manual, which is the same for GB oil:
http://www.five-speed.dk/Download/NAOwnersManual.pdf
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- Learner Driver
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Re: Gearbox oil 85w-140 ok to use?
Ok, thank you
- beavis
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Re: Gearbox oil 85w-140 ok to use?
Hopefully this will help 

Turbo NB Build Thread | BeavisMotorsport.com | YouTube.com/bbeavis | Cars: NA6, NA8-VVT, NB-Turbo, ND-2L
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- Learner Driver
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- Joined: Sat Jun 10, 2017 4:24 pm
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Re: Gearbox oil 85w-140 ok to use?
Nice one. Thanks
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