Differential Lube

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Just bought a Pro Street style 67 Dodge Dart. It will mostly be a cruise-in ride. I'm changing the cover in the Dana 60 rear diff. What lube should I use? Any secrets on changing lube? Just remove bolts and drain? What is the capacity? Thank you.
 
Look on the Amsoil website and it should have this info for your exact vehicle. You may need to know the exact differential model#, often there are several for a given vehicle model.

If you go to a friendly dealer and ask nicely, they will give you a copy of the STAR report which will show everything that went into the vehicle at the factory. It will tell you the diff model#.

Amsoil AVG gear oil is what I use in everything when I change it.
 
This era probably specifies pre-J306 mineral gear oils grade 80W90 or monograde SAE 90.
Technically present day SAE J306 (direct) equivalents would be 8xW90; SAE90; xxW110 or SAE 110.
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welcome to BITOG!!

Nice vehicle. I would use any 80w you can find. Amsoil is good but you can use any convention without issue. Take the bolts off and drain it fully. Use either a gasket or form a gasket and fill till it is seeping out the fill hole. If you're looking for an upgrade I am sure you can get a new plate cover that will hold a higher capacity. More fluid will keep the gears cooler.
 
I would use Amsoil or Redline 75W-110.

If your differential cover doesn't have a fill hole you can fill a couple of plastic bags to your differential's capacity and bolt the cover on. Drive (very!) slow for the first few yards.
 
Only real bind folks can get in relates to those having a fill plug on the housing. They pull the cover, dump oil, bolt cover on - and now find the plug is stuck. Does your new cover have the fill plug ?
I buy them that have drain, fill, and tell tale for fluid level.
 
Welcome, and nice ride. Can you post some photos?

Maybe some of the resident Mopar guys will find this thread and give info on fluid and capacity, but I'm pretty sure the only Dart that had a Dana was the 1968 Hemi 4-speed model.

In your case, I would try to track down the axle builder to see what they or the parts manufacturers recommend. I once put in a set of Richmond gears, for example, that recommended 85W-140. Oils have come a long way since then (20 years ago) and certainly since any car was manufactured with a Dana 60, though.
 
Nice car! I've never actually owned a Mopar with a Dana (all 8-3/4, 9-1/4, or 8-1/4). The Dana, as you know, is a BEAST of a rear end. As far as I know, it was not ever actually factory-installed in an A-body (the biggest rear-end any A-body ever got, including the '68/69 big-block Darts and Barracudas was the 8.75.) *Maybe* Mr. Norm's Grand Spaulding Dodge installed it in some of his GSS cars? I'm also not an A-body guy, I've always had B-bodies and C-bodies. The 4-speed big-block and Hemi B-bodies (Charger, Coronet, Satellite, Roadrunner, SuperBee) are the ones that definitely got a factory Dana. The whole reason for the Dana wasn't to handle the power, per se. It was used to survive the shock loading of a very hard dragstrip launch of a very powerful engine in a heavy car with sticky tires without breaking a gear on the launch. Its massive overkill for cruising or even towing where the load is sustained but not impulsive.

That said, its not at all picky about gear oil, especially for your intended use. I would use a good synthetic with limited-slip additive. If you want to spend for Redline, then its great stuff. But honestly Mobil 1 gear oil works great in those old battlship-sized axles. I'd probably stick with something like a 75w90, but its not going to have any trouble on a 75w140 either.
 
Ramblejam, your claim that Amsoil is cheating has no evidence. Bring the evidence or shut up. You should know the lawyers from the other oil companies would be all over it if they could show the on-file test results were lies.
And the "disclaimer" is merely a statement that its a snapshot in time.

If you can find a better test, then bring it.
 
I didn't see Ramblejam claim that they're "cheating," but a 2007 study is pretty irrelevant and meaningless to today's products. I don't doubt that Amsoil's offerings are still good, but the study is seriously outdated.
 
Originally Posted By: 440Magnum
I didn't see Ramblejam claim that they're "cheating,"

Never did. Given that he linked to the non-updated study from a third-party blog, I asked if he was aware that this was coming from Amsoil. Of course, if I openly mention that they underwrote/sponsored it, that means I'm accusing them of cheating. In reality, they're doing the same thing that other oil companies and good lawyers do; never ask a question they don't already know the answer to.
Originally Posted By: oil_film_movies
And the "disclaimer" is merely a statement that its a snapshot in time.

Then so is your recommendation.
 
440Magnum hit every point I had. As a young guy myself the guy that owned and raced the Ramchargers Hemi Cuda lived down the street from me. He told me he would run dino lube in the rear and if he needed an extra .1 second in the finals he would switch to Synth M1 and the .1 second gain was a sure thing every time. For general cruising I have and would do M1 every time.
 
I have used Mobil 1 gear oil for many, many years. I'll speculate a bit here - but when you compare the VI and price of the M1 75w90 vs 75w140 I'd say the 140 is packing the PAO.

I have switched to more HD stuff now - Delvac 1 gear oil (think Tired Trucker uses this stuff).
 
Thank you, Guys for the responses. They are helpful. Will see what I can do about getting pics posted.
 
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