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Correct rear axle gear oil?
#1
Hello,

My 73 convertible is coming along nicely, just added a set of KYB gas shocks and looking forward to a long test ride. But I've got a question on the proper rear oil. It's coded as a "2" which is a 2.75 conventional rear axle. When I first got the car running last summer I had a shop drain the rear end and they replaced it with GL5 80/90 oil. Is this correct?

I'll be taking her for her first 300+ mile drive in a week or so and want to make sure she's ready for it.

Thanks,
Scott
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#2
that should be fine for a peg leg rear end. If it is a track lock, it would need an additive, but it would almost have to be a replacement to be a track lock rear end

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
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#3
Jeff73Mach1;129670 Wrote:that should be fine for a peg leg rear end. If it is a track lock, it would need an additive, but it would almost have to be a replacement to be a track lock rear end

Thanks Jeff. I was reading something about the original requirement being GL6 but noticed they had replaced mine with GL5. Not sure of the difference.

Scott
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#4
GL6 is obsolete and not generally available. I think you can get it in Canada. GL5 is just fine.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
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#5
Not to jump the post but, what do I need to use for a Detroit Locker?

[Image: 2rr7aiv.png]

Just cruising along minding our own business when BAM!!! The LAWS show up.
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#6
from Eaton

"What kind of oil should I use? Can I use synthetic? Do I need friction additive/modifier?

A quality petroleum/mineral based oil works best in the Detroit Locker units. We do not recommend synthetic oil. Friction additive/modifier is not required."

http://www.eaton.com/Eaton/ProductsServi...erentials/


I personally would run synthetic-detriot lockers don't use clutches, but their mechanical bits are under a pretty heavy load.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
  Reply
#7
Thanks Jeff! Great info.

[Image: 2rr7aiv.png]

Just cruising along minding our own business when BAM!!! The LAWS show up.
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#8
One thing about being a lawyer, you learn to research efficiently.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
  Reply
#9
Jeff73Mach1;129670 Wrote:that should be fine for a peg leg rear end. If it is a track lock, it would need an additive, but it would almost have to be a replacement to be a track lock rear end

Could have the 2.75 traction lock from the factory - mine does and confirmed by Marti.

[Image: 1673if.png]
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#10
jb73Mach;129905 Wrote:
Jeff73Mach1;129670 Wrote:that should be fine for a peg leg rear end. If it is a track lock, it would need an additive, but it would almost have to be a replacement to be a track lock rear end

Could have the 2.75 traction lock from the factory - mine does and confirmed by Marti.

Marti and the tag on the rear end both confirm the conventional 2.75. :-(
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