Ring & Pinion Lube
 

What is the best grease to use in a Stocker rear? Jim


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Re: Ring & Pinion Lube
 

Richmond blue synthetic.

Re: Ring & Pinion Lube
 

I've been using Amsoil Severe Gear 75w-90 for many years and have been happy with the results. It's in my Dodge dually also.

Re: Ring & Pinion Lube
 

For about three years I have been experimenting with Lucas products. I thought since Lucas is such a positive company for drag racing I would try the products.

So far I am very happy. My 12 bolt rear with 5.38 gears look like new after 150 runs. The 4.57 gears in 9" are the same. Engine bearings in a 408 SBC and 496 BBC are perfect. Two different powerglides look great after a full season.

I use the following Lucas products
*20w/50 "Plus" engine oil
*Semi-synthetic assembly lube
*Semi-synthetic ATF
and to answer your question about rear gear oil
*HD 80w90

I am satisfied Lucas is a good company with good products. It may require some shopping but can usually be bought at competitive pricing.

Re: Ring & Pinion Lube
 

Pick your favorite brand and use their synthetic gear lube. I've been using synthetic for years. No big warm up procedure, it's ready to go. :)

Jeff

Re: Ring & Pinion Lube
 

I switched to Strange US Gear 5.38 for Dragweek 2011. The tech guys at Strange said do not use any Synthetic Lube. They recomended Lucas. This was the first time on Dragweek that I didn't screw up a ring and pinion.

Re: Ring & Pinion Lube
 

I use the Joe Gibbs 75W110 in my Ford 9". Came highly recommended from Wayne @ Indy Gear. So far so good!

Re: Ring & Pinion Lube
 

I use one quart good synthetic, 1\2 quart synthetic auto fluid, and a pint of problend. It's a 5 speed unit, and mark williams center, with over 100 runs, 0 problems. Just me, and might not work for others.

Re: Ring & Pinion Lube
 

Jim,

I have Mobile 1 synthetic in mine. So many runs I cant remember when I put the last ring and pinion in the car. I have also used Valvoline synthetic as well with similar results. I have a dana though.

Re: Ring & Pinion Lube
 

Been using nothing but Mobil 1 synthetic gear lube for the past 2 decades. Current Richmond Pro R&P in my 9" with a MW "Pro Stock Assembly" 3rd member have 720 passes on them, 60 footing low 1.20s to high 1 teens.

Re: Ring & Pinion Lube
 

I never realized how varied the opinions on this subject would be! It seems very much like engine oil. I got 6 PMs and not one recommended the same gear lube. All but one advised to use synthetic though. Now a question from you MoPar guys who use an 8.75 rear. How much lube do you use? The stock rear uses about 2.5 quarts. I have heard several guys say all you need is one quart if you have a spool. My red flag goes up when hearing that because you not only are lubeing the ring and pinion but also the axle bearings. I don't see how one quart would be adequate for that. Am I wrong? Jim


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Re: Ring & Pinion Lube
 

Your not wrong. If you know Jimmy Bridges, ask him what he found about this. Unlike engine oil levels, it's not a windage thing.

Re: Ring & Pinion Lube
 

yes, you are wrong. Many Stock/Super stock racers run only 1 quart and so do I.;)

Re: Ring & Pinion Lube
 

Jim, for most applications the axle bearings are sealed so they do not rely on the gear oil for lube. Check to see if that is the case for your combination.

And yes, it is very common to use 1 - 1 1/2 qts for gear oil. For my Firebird with a GM 12 bolt I run 1 1/2 qts. With our 9" fabricated housing I run 2 qts

Re: Ring & Pinion Lube
 

One of the reasons they put the level so high in a stock rear is so the side carrier bearings are bathed in oil. If you try to run at the stock level you will most likely see leaks as well as an associated power loss . idealy I would run it full to warm up and then drain out all but a litre to race. But that's alot of work and I 've only done it that way once or twice.---Trevor

Re: Ring & Pinion Lube
 

Might be common, but that does not make it right. I was running one qt in my GM 12 bolt. At Indy last year James Lee was with me. He walked over to visit with Jimmy Bridges. Gear lube came up. James had been galding gears. Jimmy had done some testing on the bench with a clear cover. I don't remember the speed, but at some point all the lube ends up in the axle tubes. He said his was faster with more lube. At that time I added the other qt of lube. To my surprise I picked up almost 1/2 MPH there at Indy. Kept that gain after returning home. You may not believe it, but might want to test it for yourself. An extremely low HP car may see something different, but if it doesn't run quicker low on lube, why do it? Your results may vary. LOL
Btw, I use Royal Purple synthetic gear lube. Never a problem.

Re: Ring & Pinion Lube
 

I saw the same thing from someone else that was running too little oil in a 12 bolt. I run 1.5 +/- qts of the Royal Purple and don't have a problem so far. As fast as your stuff is, I wouldn't change a thing.

Re: Ring & Pinion Lube
 

To elaborate on this, the aftermarket, non-adjustable bearings normally used on Mopar rear ends are the sealed "Green" bearings. The OEM adjustable versions may require gear lube. But I haven't looked at one, much less used one for decades.

Re: Ring & Pinion Lube
 

Thanks Kyle. Been using Royal Purple everything for some time now. Zero problems with anything. I need to find out where you have been buying oil. I'm paying way more than you for this stuff. NAPA has it, but wow! LOL

Re: Ring & Pinion Lube
 

I have used a quart for a long time. Add a little more if you want. Amsoil synthetic, Mobil 1 synthetic.....

Re: Ring & Pinion Lube
 

The Mopar OEM 8 3/4 and Dana 60 axle bearings get packed in grease (like front wheel bearings) prior to pressing the assembly on the axle shaft. There is an inner grease seal in the housing that prevents rear end fluid from reaching the wheel bearings.

Re: Ring & Pinion Lube
 

Thanks for refreshing my memory. At least I got the first part right.
I believe some of the other Mopar axles with c-clips and straight bearings use gear lube?

Re: Ring & Pinion Lube
 

You are correct! After pulling the rear apart I fully understand now. The rear in my car is a complete Moser fabricated unit using a stock housing. It is braced and has a Pro Gear and the axle bearings are sealed. I am still not comfortable with one quart and have put two quarts of Amsoil gear lube in. Boy, that aluminum chunk IS lighter than the iron one! Jim

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Re: Ring & Pinion Lube
 

You're going to get it for that,lol.

Re: Ring & Pinion Lube
 

Just seeing if you're listening!:D Jim


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Re: Ring & Pinion Lube
 

I have a question or an observation,If you want to know how little friction you are creating--why not mount a EGT in the rear and hook it to a data-logger so you can get a play back and look at the run and then make changes.
reed

Re: Ring & Pinion Lube
 

You can buy paint or tape kits that register temps.

Re: Ring & Pinion Lube
 

Or, you could just watch the MPH clocks.

Re: Ring & Pinion Lube
 

You can buy paint or tape kits that register temps.

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Back in the early days of Pro Stock, Bob Glidden fabricated a small sump like kick out in his rear end housing that had a bung welded in it for a heating element similar to a water heater, only smaller. The heater was plugged in between rounds to keep the gear oil up to temp. That was long before synthetic gear oil was up to speed.

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If memory serves me right I believe I saw Larry Hill laying on the ground in the staging lanes at Indy one time heating his rear end with a propane torch.

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No way! So that's his secret? Ha! Jim

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I run one in the slant six car, It's so slow nobody ever looks.lol

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Yes you're correct. The 8 1/4 rear for one example utilized roller axle bearings and relies on differential gear oil for lubrication.

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I reply stating 720 passes on one R&P in a car that 60 foots 1 teens and you're " still not comfortable"?

Well at least you got the synthetic part right.

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Might lead a guy to think...... Oh, never mind. LOL

Re: Ring & Pinion Lube
 

They will now!:eek: Jim


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Call me cautiously old school. Just sayin' Jim


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Re: Ring & Pinion Lube
 

Not to hijack the thread but while we're on the subject of rear ends, I just wondered how many people run ball bearing carrier bearings??? I had one of the first custom built units (9" Ford) years ago but I have to assume that now they're pretty common.

Re: Ring & Pinion Lube
 

We do on the cobalt from MW. Does strange have a ball bearing support for their nodular? Have two centers for the deuce, one strange, one MW>