I'm putting together my 8.75 and I'm ready to fill the "diff". Does anyone know if I have to put an additive in for the sure grip? If so, what do you recommend? I checked Royal Purple and it looks like nothing else is needed.
SureGrip Additive
- Thread starter scatpakman
- Start date
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pastortom1
Well-Known Member
I absolutely swear by the Mopar additive.........it is simply the best.
Thanks Pastor! Where can I get it?
pettybludart
Well-Known Member
Yes,if you have a sure-grip?you need to put in the additive!
mullinax95
Well-Known Member
For clutch type diffs you need a friction modifier. I use Mopar brand in which you can buy at your local dealership.
How about for the cone type sure grip...still needed ?
Needed in all SureGrips or Hypoid differentials.
mullinax95
Well-Known Member
With the cone type yes. Now I would highly recommend not running synthetic gear oil in the cone type. Auburn gear makes cone types and they say DO NOT run synthetic gear oil. I don't like Auburn anymore... I bought a carrier for my truck and it broke in about a year and half! Those things aren't cheap and I had to pay labor twice!!!! :angry7:
70Duster440
Well-Known Member
A bottle of friction modifier from your local (ack) Ford dealer will do the trick too.
goldduster318
Overzealous Car Modifier
you can also buy it at advance auto parts. I used that and two quarts of 80w-90
Maybe a dumb question here but......we put the rearend in the Demon about 2 years ago. I can't remember if we put the additive in or not.....:tongue3:
Can I add a bottle just to be sure?
Can I add a bottle just to be sure?
Just used regular gear oil 85-90 weight. Hmmm, did hear something on the maiden voyage in the parking lot....LOL
Thank you. :cheers:
7duster4
Well-Known Member
I have and 8 1/4 with a cone type sure-grip. We added Kendall additive. Seems fine just smell's real bad.
dgc333
Well-Known Member
Read the bottle of gear oil you are using, some come with the additive already in them.
abodyjoe
Well-Known Member
i always use it even if the gear lube has some in it. last time i used the ford stuff because they had it in stock and the chrysler dealer didn't. looked and smelled like it was the same as the chrysler stuff.
whitey
Well-Known Member
I used Royal Purple that has the additive already in, but I put a bottle of additive in anyway.
Small Block
Well-Known Member
The parts guy at your local Dodge dealer should have it in a small, maybe 4 oz., bottle. That's where i got mine.
charger70
Well-Known Member
The part number on the bottle of Mopar Limited Slip Additive I have is 04318060AB.
And the Directions about how much to use is written on the bottle too.
And the Directions about how much to use is written on the bottle too.
Little tip about checking for lack of Sure-Grip additive lthat I learned a long time ago. On a really smooth slap of concrete, crank the steering wheel all the way to the stops while 3 friends push the car backwards. If you feel or hear anything unusal, it is probably the clutches chattering. Having the engine off allows you to feel and hear stuff a lot better.
That was probably just BOTH wheels grabbing asphalt!!!LOL!! Go go gadget Suregrip!!! Geof
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