90# gear lube.

Gerry · Post by **Gerry** » Mon Oct 26, 2009 11:28 am

IS there any special gear lube I need to use in my differentials? Also how much will I need?
Thanks,

Post by **Cal_Gary** » Mon Oct 26, 2009 11:52 am

Nothing special: Regular GL90. You'll find out quickly if your inner seals are bad because the oil will start leaking out.
Gary

Gerry · Post by **Gerry** » Mon Oct 26, 2009 12:03 pm

Thanks Cal Gary
Do you know how much will I need?

cuz · Post by **cuz** » Mon Oct 26, 2009 1:49 pm

Each gets 6 pints.

Gerry · Post by **Gerry** » Mon Oct 26, 2009 2:17 pm

Thanks Cuz,
I am used to your m38 advice. Great to have you here now

MSeriesRebuild · Post by **MSeriesRebuild** » Mon Oct 26, 2009 3:00 pm

80-90 gear lube is a better choice, flows better on a cold start up. Making a premium brand choice is also a smart move. Many cheapo brands are out there now. With bearings to build a diff now over $600, you want to invest in a good quality oil that will do the best job.

Gerry · Post by **Gerry** » Mon Oct 26, 2009 6:08 pm

Charles,
Any brands you recommend?
Thanks,

MSeriesRebuild · Post by **MSeriesRebuild** » Tue Oct 27, 2009 9:11 am

Gerry wrote:Charles,
Any brands you recommend?
Thanks,

My preference would be Royal Purple Synthetic MaxGear, available through NAPA or Synergyn 80-90 gear lube, available from www.SynergynRacing.com
Hydrotex is a very good brand also.

Any of these have a strong additive package with ingredients that causes the oil to adhere tenaciously to gears and bearings, far superior lubricants to the general off the shelf brands.

Gerry · Post by **Gerry** » Tue Oct 27, 2009 10:04 am

Charles
Thanks,

greencom · Post by **greencom** » Thu Nov 05, 2009 3:37 pm

MSeriesRebuild wrote:
Gerry wrote:Charles,
Any brands you recommend?
Thanks,
My preference would be Royal Purple Synthetic MaxGear, available through NAPA or Synergyn 80-90 gear lube, available from www.SynergynRacing.com
Hydrotex is a very good brand also.

Any of these have a strong additive package with ingredients that causes the oil to adhere tenaciously to gears and bearings, far superior lubricants to the general off the shelf brands.

Charles,
I assume that would also be good to use in the gear boxes of my '42 jeep?
Greencom

MSeriesRebuild · Post by **MSeriesRebuild** » Thu Nov 05, 2009 4:08 pm

Good for differential use.

Captnsim · Post by **Captnsim** » Thu Nov 05, 2009 4:10 pm

Great stuff Charles. Thanks

Montanaorbust · Post by **Montanaorbust** » Fri Nov 06, 2009 10:10 am

I fill mine up with grease.. jk