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Guest Message by DevFuse

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Rear diff an 4MT Gear Oil.....

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4 replies to this topic

#1 TheSubaruJunkie



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Posted 31 August 2003 - 03:20 PM

Can I use the same oil for the rear diff AND my EA81 4spd tranny?

Time for a complete lube job. And im installing a welded rear end, so i need to fill that with oil. Is there "special" gear oil for a manual tranny?

Im thinking Castrol 85w90 off the top of my head.


#2 GLCraig



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Posted 31 August 2003 - 03:38 PM

Both use the same oil and as long as what you use meets GL-5 specification. As far as vescosity 85w90 should work great.

#3 Qman


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Posted 31 August 2003 - 03:39 PM

I think the specs call for 80w/90 but the Castrol should be just fine in both.


#4 NV Zeno

NV Zeno

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Posted 31 August 2003 - 03:43 PM

Yep, 85-90..that's what I 've got, although the xmission juice is synthetic. Quite a difference on those cold Tahoe mornings in January.

#5 TheSubaruJunkie



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Posted 31 August 2003 - 11:12 PM

Thanks guys. Went to Napa and got a full gallon of 85/90. Had a buddy weld the diff too, so next day off I should be able to do a full lube job.


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