Re: Are synthetic oils and lubricants any quicker
 

Snore.....

Re: Are synthetic oils and lubricants any quicker
 

Ditto

Re: Are synthetic oils and lubricants any quicker
 

From my sons dirt track car with a 9 inch ford, they make a seal that slides in the axle tube to keep lube in the center section don't know if they make them for any thing else.I have been told that most major nascar teams have a diff dyno to run there gears on. Was told that it takes 47 hp to get a 9 inch up to speed and then 3 hp to keep it at speed. With that being said any thing that we can do to make less drag in the diff, the car should go faster. Most of us run small motors 350s or less and what some 500 plus does not apply to us. Tom

Re: Are synthetic oils and lubricants any quicker
 

At least on a 9 inch it's very easy to keep the oil in the gear area. Fitting and welding small "dams" in either side of the housing works good. For the most part 2 quarts in a 9inch is what I run, have tried the 1 quart deal but honestly saw no measurable difference. I'll put this one in the running 2-3 quarts of engine oil column, use at your own risk. Your results may vary I would think that if there were a gain to be had at least in drag racing....heating the oil would be of greatest benefit.

Re: Are synthetic oils and lubricants any quicker
 

I was surprised Jimmy had built , or saw, a rig like that run. I never thought about dams, or baffles in the housing. I'm old.

I've heard of guys running ATF for gear lube. Never tried that. I know a Pro Stocker that uses a heater in his 9.5" housing. The cord is tied to the left wheelie bar, so is easily plugged in. Thought about putting a heater in my 12 bolt rear cover. I have drain & filler plugs in it now. I carry some Dexron for that, I may try that if I have a heads-up that worries me enough.

If I just bracket raced I wouldn't have to worry about crap like that, would I? LOL

Re: Are synthetic oils and lubricants any quicker
 

Thanks for the input.My brother told me that there was no difference between the two in his SS/KA Challenger but I wanted some additional opinions.
Jeff Ross

Re: Are synthetic oils and lubricants any quicker
 

My opinion ain't worth much, but, to me oil is cheap, parts aren't and never have had a problem with a rear that had the proper amount of oil in it since '81. There is a company called "Seals It" that makes all kinds of seals, including ones that designed to go into axle tubes like 9" Ford type rears to keep the oil in the center section and not go running into the axle tubes.John Kissel K242

Re: Are synthetic oils and lubricants any quicker
 

Very common in circle track cars.

Re: Are synthetic oils and lubricants any quicker
 

Next time I have mine apart, I need to see if I can figure out something for my 12 bolt.

Thanks guys!

Re: Are synthetic oils and lubricants any quicker
 

Ed -
I'm not sure it's much of an issue in a 12 bolt drag car. Circle track cars try to control the inertia that wants to move the lube to the right rear axle tube.