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What Gearbox Oil?

Guy Miller
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8 years 8 months ago #38410 by Guy Miller

What Gearbox Oil? was created by Guy Miller

Hello, I know this has been covered many time over the years but would anyone be able to confirm if Redline MT90 is safe to use in 1500 standard gearbox or should I stick with the original spec ZC90 non EP? Any other recommendations would also be appreciated... many thanks and apologies if this has been covered many times before.

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Jon Griffiths
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8 years 8 months ago #38411 by Jon Griffiths

Replied by Jon Griffiths on topic What Gearbox Oil?

Hi Guy,

I changed my gearbox oil on the weekend and I purchase the ZC90 Tutela 80W-90 from Ricambo.
My 5 speed box took just under 3 litres to fill up, which cost me £38.16 including delivery , I had various different oils offered me by various places but decided to play safe and go with the oil recomended by Ricambo!

A good tip to make the job easier was to remove the back wheel and we used a clean grease gun with a rubber hose to fill up the gearbox, as you are unable to pour it straight from the tub!
Best of luck
Jon

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Guy Miller
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8 years 8 months ago #38413 by Guy Miller

Replied by Guy Miller on topic What Gearbox Oil?

Hi Jon,
Many thanks for the quick detailed reply. (Very impressed)
It's nice to know that I am not the only one who has been given possibly too many choices of oil which makes it very confusing..
I can see why you chose to go with ZC90 and I think I will end up going down the same route.
Nice tip regarding the filling.Cheers.
Thanks again for the info and advice.
Guy

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Speedy Fiat
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8 years 8 months ago #38418 by Speedy Fiat

Replied by Speedy Fiat on topic What Gearbox Oil?

The X1/9 gearbox doesn't like EP gear oils as the additives can affect some of the metals used on the internals, the synchros I think. Its really not easy to find none EP gear oil and so after much investigation I use 'classic type' mineral 20/50 engine oil, apparently its a common substitute. Its the right viscosity and a few hundred thousand Minis can't be wrong (they share the engine and gearbox oil) .

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