12 bolt gear oil
 

What's a safe amount of gear oil in 12 bolt ? I tend to over fill !

Re: 12 bolt gear oil
 

1 quart.

Re: 12 bolt gear oil
 

[QUOTE=M Brand 505B;527132]1 quart.[/QUOTE 1 quart is safe

Re: 12 bolt gear oil
 

Best gear oil to use is Red Line Lightweight ShockProof. It has gl6 where as most others only have gl5. The gears never really touch each other, the oil is a cushion.

Casey Miles
248H

Re: 12 bolt gear oil
 

Second vote for Red Line Lightweight ShockProof, 1 qt. Plus they support sportsman racing and are one of our sponsors.

Matt Welker
Stock 1741
SS/AH 114
www.facebook.com/welkerracing

Re: 12 bolt gear oil
 

If the cover retains the OE design, a quart of gear oil will be out in the axle tubes before you pass the 330' clocks. Think about that.

Re: 12 bolt gear oil
 

How are they supporting us?

Re: 12 bolt gear oil
 

They are a sponsor for our three car S/SS team.

They also sponsor Jimmy Defrank, another S/SS racer you might recognize.

https://www.redlineoil.com/motorspor...x?id=56&mid=15

There are many companies that support S/SS racers across the country. Just because you don't see them on a contingency sheet doesn't mean that don't support S/SS racing.

Re: 12 bolt gear oil
 

Ok, that's what I assumed. I was hoping I was missing something as I use/buy their products.

Re: 12 bolt gear oil
 

I've always used two simply because I don't know any better...

Re: 12 bolt gear oil
 

Beware of the redline stuff. It has changed since they were bought out.0

Re: 12 bolt gear oil
 

I have 5 Gallons of the old Heavy Shockproof (Red) if anybody would want it ... Never opened ... Back when we were going through 6.00 gears every 50 runs, I tried this . It did help .... But a 9 in. was the cure ....

Re: 12 bolt gear oil
 

I wonder if anybody has ever tested oil level in a 12 bolt. I think that your better to have a slight over fill then an underfill condition. If there is not enough oil then the gear runs dry and you create friction. I can't imagine there is much ET between running 1 and 2 qts. That's just me

Re: 12 bolt gear oil
 

The gears will not run dry with 1 qt. My only concern would be the axle bearings. Sounds like 1 qt is what many use.

Re: 12 bolt gear oil
 

I have used the redline lightweight and super lightweight for years and love it. Rear and stickshift transmissions.

Please explain what has changed and what I should be concerned about? Did I miss a memo?

Re: 12 bolt gear oil
 

I have 2 qts of Richmond GL-5 in my 12 bolt, and put 220-240 runs a season on my pro gears. I think these gears have been in for at least 4 seasons.

Clark

Re: 12 bolt gear oil
 

Darrel, This has been discussed here before,..several times.
I've run 1 qt. 85-90 synthetic, quite a bit ,and never hurt anything.
The cover design on a 12 bolt, directs oil right to the side bearings anyway.

That being said, it's been determined by several racers, that a lot of the oil goes up into the axle tubes anyway, and that 2 qts. won't hurt you much.

A personal observation: If you are going to try some kind of super light concoction for a record run or something, make sure the gears are well broken in with the regular stuff first.
:-(

Re: 12 bolt gear oil
 

Thanks for the info.

Re: 12 bolt gear oil
 

I would like to know about your findings as well?

Re: 12 bolt gear oil
 

2qts should be just right. As far as axle bearings go on axles like a Ford 9" the seal is in the tube behind the bearing from the factory. I can't remember how it is with c clip eliminators. I never saw the advantage of the heavy shockproof in a rear. I prefer flow over it sticking to non wear parts. It's impressive if you disassemble as gar as how it coats everything.
As far as support goes I don't think anyone holds a candle to Lucas for support and their products are great. I like Lucas synthetic gear lube.

Re: 12 bolt gear oil
 

Soooo how much for a 10 bolt? 1qt?