1973

hoping someone can identify this gear lube, it is orange in color and clings really well, I cannot find the person who built the rear end to ask what it was.

JimLentz

This?

MelWff

don't think that is compatible with limited slip differentials

DUB

This axle does not look like a Corvette stub axle. What are you dealing with...even though the gear oil seems to ahve been found in the second post.

DUB

1973

thank you for the ID, and Hi Dub! yes this is out of a Dana rear from another car, I just put a new cover on my corvette rear and this lube looked pretty neat, the dana is a posi-- could they have added a additive to it for the posi?

BOOT77

I wonder if shockproof diluted with some other type would turn orange.

pws69

Looks exactly like the Shockproof Heavy that I use in my Harley!

DUB

When it comes to adding differential oil and additive to Corvette rear differentials....I DO NOT try to 're-invent the wheel'.

WHY??? Because I do this for a living...and I have to warranty my work and this includes my decision on what I use during my repairs. I am NOT a DIY'er ( which is not a cut down )....so...if a catastrophic failure problem...or a longevity issue occurred due to me changing what I know works...it costs me major money and damage to my reputation....which is not so easily repaired. I know many advancements in oil and using AMSOIL in my shop...I still can not use anything buy GM products in a differential. I have been told by my AMSOIL guy I deal with that their stuff would work fine....but...I can not do it....because if something went wrong...I would kick myself in the backside for changing.

DUB

1973

ok I am not ruling out just using normal gear lube, I just thought this stuff was amazing as it clung to that axle shaft as you see it, that was sitting there over a week and that lube never made it down to the bearings! so DUB what do you recommend? weight and brand type?

DUB

I agree with you..and if my previous comment came across all prissy and such. I did not mean for it to do that.

YEAH...I would also be amazed if it has still clung on and not run off the axle. It would make me 'wonder' also....and it actually is. Hmmmm...very interesting.

But...due to liability/warranty issues for me...I mainly use GM anti-slip additive and GM gear oil. It is easy for me to get and is not that much $$$. So I use what GM sells so if a problem ever occurred...I would not have to explain WHY I did not use GM oil to the customer who would ask and possibly use that as a reason for the failure. Keep in mind...in 30 years...I have dealt with about every type of person and attitude that you can imagine.

Now on some differentials where my relationship with the owner is very good and not all about...'pointing fingers'....I will use Valvoline 80w-90...BUT I still use the anti-slip additive from GM ALL the time where it is required. But..generally I use the GM products because I get them by the case....so it is on hand.

DUB

Moose 02 FB

it definitely looks like red line heavy duty shockproof I also use it in my harley trans and it sticks to all the gears.

1973

ok thank you DUB, I also listened to you on all my weatherstips and used what you told me, body is not quite done yet but frame is close! by the way do you have the part number for the GM additive?
also I will check into that red line- does that need a additive also? (thank you Moose)

Moose 02 FB

now matter what you use you will need some type of posi additive unless you find something that has it already added

Solid LT1

I don't think that's Redline Shock Proof and I have 2 gallons of Redline in my garage right now. I think it is a lube with Lucas oil additive added into it. Lucas additive makes gear oil cling to parts. Moroso also sells a "climbing lube" for differentials.

leadfoot4

That stuff crossed my mind, but I wasn't sure of it's color.

toobroketoretire

As the pinion is submerged in oil it doesn't make any difference whether it "clings" or not.

DUB

A local GM dealer should have that no problem. I think the part number is 88900330

GOOD POINT.

I KNOW it is a BIG STRETCH ...but I get differentials that come in from time to time where the car sat so long and was NEVER MOVED...that when I take to cover off...half of the ring gear and carrier are covered in rust.....and the other half that was in the gear oil...is perfect as can be.

Like I wrote...it is a stretch...but I kinda like how it clings.

DUB