What oil do you guys use for the diff.

gazzarose
Junior Member

18

08-09-2019, 12:39 PM

#1

Hi guys,

I'm ording some oils from Opie oils, and decided on Castrol Edge 5w30 for the engine, Redline MT90 for the gearbox based on recommendations for whine reducing and making shifts smooter (it comes in quarts and I think 2 will be enough?), but not sure what to do with the diff oil. If read a few of the threads RE diff oil, and Ive got the spec (I think) but a bit confused about quantities. Theres a few confliting posts about with diff has the most oil, LSD or non-LSD. I've got a Sport so I've got an LSD I think I need just less than 1ltr. I was looking at the Redlne diff oil which strangly is slightly cheaper than Castrol, but again Its i quarts (0.946 ltrs), so don't know if 1 will be enough, or will there always be a bit left in the diff to help. Also I'd need a oil pump/syringe for the redline whereas the castrol has a nozel on the bottle. Although I'll probably still need a syringe for the redline gearbox oil.

My car has gone a bit over its due date for servicing and it just getting to 110k, and I don't intend changing car soon, so want to try and look after the old girl the best I can.

Any help/advice would be great.

Gareth

toxo
Posting Freak

4,843

08-09-2019, 01:43 PM

#2

From the workshop manual:

Quote:Oil Grade: Hypoid gear oil API GL-5
Viscosity:
Above -18 degrees C (0F) SAE 90
Below -18 degrees C (0F) SAW 80W-90 or 80W
Capacity:
1.05 Litres (1.11 US quarts, 0.92 imperial quarts)
LSD
1.00 Litres (1.06 US quarts, 0.88 imperial quarts)

I would imagine you'll be fine with 1 quart, you won't get all the fluid out. You'll want a pump for the diff oil regardless of what you use as you'll have to pump it in from underneath.

ormi
Posting Freak

3,006

09-09-2019, 07:48 AM

#3

remember you do not use lsd oil in these you just use normal diff oil

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gazzarose
Junior Member

18

09-09-2019, 09:10 AM

#4

Thanks guys, I kind of understand engine oils, and to an extent gearbox oils, but don't knwo anything about the requirments for diff oils. Will this be ok

http://www.opieoils.co.uk/p-737-castrol-...5w-90.aspx

Ordered all mu filters last night, so I'll have loads of pressies turning up in work next week, shame its all extra work,lol.

Thanks again

Gareth

Lance79
Member

77

10-09-2019, 04:48 AM

#5

I used Redline GL5 80w 140.

Good stuff Smile

gazzarose
Junior Member

18

10-09-2019, 05:49 AM

#6

Did you just need or quart of the redline stuff?

Lance79
Member

77

10-09-2019, 07:50 AM

#7

Yeah. I couldn't see 59ml being important in the grand scheme of things.

gazzarose
Junior Member

18

10-09-2019, 07:51 AM

#8

Sorted, ill get everything ordered thought.

Thanks

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