Rear Diff Oil

[ianjpage]

Am intending over XMas break (off for 2 weeks ) to change the rear diff gasket seal on the maro (as its leaking) - no problems finding and getting the gasket but what kind of oil does it take in there?

The manual is really helpful - it says "use the recommended oil" ..... doesn't tell me what though!!!

I have some recollection of it needing special oil, or special additive or summat ????

[Titsy]

80W - 90 GL-5 Oil... if it was an LSD you would need a GM addative, but i'm guessing that's not the case...

[Roadkill]

I've got some gear oil - not sure the number but free if it's suitable.

[ianjpage]

Quoting: Titsy

80W - 90 GL-5 Oil... if it was an LSD you would need a GM addative, but i'm guessing that's not the case...

Cool thanks for that - Nope not an LSD - good ol' fashioned open diff so no additive

Quoting: Roadkill

I've got some gear oil - not sure the number but free if it's suitable.

oo cool - be grateful if you could check and lemme know please

[F Body]

Rear Axle Lubricant = SAE 75W - 90 Synthetic.   
Original GM Part No. 89021677 - NB GM keep changing the part No's
Quantity Required = 1.70 Litres or 3 Pints.

[ianjpage]

- any chance to have a check deano?

[Roadkill]

Quoting: ianjpage

any chance to have a check deano?

T'is in the Caddy - I'll check tonight.

[ianjpage]

Quoting: Roadkill

T'is in the Caddy - I'll check tonight.

Cool thanking you

[Roadkill]

80w 90 - something . . .

[ianjpage]

Quoting: Roadkill

80w 90 - something . . .

huh ......

[Roadkill]

It's 80W 90 . . I've got over 5 pints of it.

It said something else on it, too . . Titsy seems to think It may work . .

[Titsy]

Like I said...

Quoting: Titsy

80W - 90 GL-5 Oil...

[ianjpage]

Quoting: Roadkill

It's 80W 90 . . I've got over 5 pints of it.

It said something else on it, too . . Titsy seems to think It may work . .

ahh right cool if it gunna work then could i borrow / have whatever quantity is required

[Roadkill]

I'll double check the "something" bit and let you make the decision.

[ianjpage]

Quoting: Roadkill

I'll double check the "something" bit and let you make the decision.

okies - TVM

[Roadkill]

In full it's HP GL-5 SAE 80W 90

[ianjpage]

Cool i guess that work then so if you don't mind i'll take it off yer hands

[Roadkill]

No problem - I've had it for about 8 years  - since I did the transmission on the '57 Hawk.



Seems GM likes using ATF in manual gearboxes so I never finished it !

[ianjpage]

ahh cool thank you then!