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Author Topic: Rear diff oil  (Read 562 times)

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Varche

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Rear diff oil
« on: 21 December 2010, 16:18:05 »
I have a small leak on the project car diff.

It needs about half an inch or less of oil to top up.

Question is what to use? Haynes says SAE90

Is that what I ask for (bearing in mind it will be a Spanish motor factors with nothing on display)?

I don't suppose for one moment I could use a drop of the gallons of Dexron3 I have lying around?!!
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Marks DTM Calib

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Re: Rear diff oil
« Reply #1 on: 21 December 2010, 16:26:06 »
SAE80/90 hypoid

The oil of choice is the BOA90LS from opie, this is an LS oil so has a friction modifier in it which appears to help the seals!
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Omegatoy

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Re: Rear diff oil
« Reply #2 on: 21 December 2010, 19:15:27 »
Varche,
have a litre(either 80 or 75/80 ) im sure on the garage/shed, whcih i can bring over when i pick up the brake pipe if you like? as long as you remind me to put it in the car when i let you know im coming!!! :-X
« Last Edit: 21 December 2010, 21:19:58 by Omegatoy »
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2woody

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Re: Rear diff oil
« Reply #3 on: 21 December 2010, 20:22:25 »
you CANNOT use ATF, sorry.

prett much anything with a "80" or a "90" on the label will be ok for a top-up.
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