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KAAZ Diff, Use KAAZ Gear oil or Not?

Old 11-06-08, 11:43 PM
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KAAZ Diff, Use KAAZ Gear oil or Not?

Hey folks, I have a KAAZ diff and I'm looking for some diff fluid for it. I've read the KAAZ recommendation of only using their gear oil in the manual. I was wondering if anyone has run any other type of diff fluid with their KAAZ? The manual states you void whatever warranty the KAAZ comes with if you don't use their oil. Has anyone had any problems running non KAAZ fluids?

Where can I get some KAAZ fluid at good prices with quick shipping? I need some asap.
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Old 11-07-08, 09:06 AM
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I’ve only run the Kazz fluid, those who I know who haven’t have complained about the noises it can make without it. But there are some that got no noise with the other fluids.

Cheap Kazz Diff fluid it a oxymoron lol
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Old 11-07-08, 09:53 AM
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I use Valvoline fluid with a GM LSD additive. I still have noises from back there but IMO I have driveline slop somewhere and it manifests itself there. As it has gotten worse over the years. I amsure I need to rebuild my LSD at this point as I DD my beast.
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Old 11-07-08, 12:04 PM
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all kazz fuild is made of is gear oil with no LSD additive. Thats why kazz diffs always clunk around slow turns. LSD additive just make the oil more slippery so you dont get the clunking. Back in the 60's 70's LSD additive was made of sperm whale oil.
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Old 11-07-08, 04:10 PM
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i use the redline HD shockproof
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Old 11-09-08, 03:18 AM
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Originally Posted by Bacon View Post
I’ve only run the Kazz fluid, those who I know who haven’t have complained about the noises it can make without it. But there are some that got no noise with the other fluids.

Cheap Kazz Diff fluid it a oxymoron lol
Do you have any clunking? Did you follow the break in procedure for the diff?



Originally Posted by BigIslandSevens View Post
I use Valvoline fluid with a GM LSD additive. I still have noises from back there but IMO I have driveline slop somewhere and it manifests itself there. As it has gotten worse over the years. I amsure I need to rebuild my LSD at this point as I DD my beast.
Originally Posted by yallgotboost View Post
all kazz fuild is made of is gear oil with no LSD additive. Thats why kazz diffs always clunk around slow turns. LSD additive just make the oil more slippery so you dont get the clunking.
BigIslandSevens & yallgotboost have these diffs been through the break in procedure? I've read of multiple cases where the diff has had no clunking issues after proper break in procedure was followed.

Originally Posted by yallgotboost
Back in the 60's 70's LSD additive was made of sperm whale oil.
Interesting bit of info there.

Originally Posted by Azcamel View Post
i use the redline HD shockproof
Any clunking with that fluid?


Where did you guys get your fluid?
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Old 11-09-08, 07:27 PM
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I have only used the kaaz fluid. with no problems.
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Old 11-09-08, 07:48 PM
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Juice, I broke your diff in with the supplied KAZZ diff oil and used their procedure to break in the diff; basically driving in figure eights for 1/2 an hour. There was very minimal clunking with their fluid after break in and it should lessen with time. After I broke in the diff, I used some leftover Redline I had lying around and the diff sounded the same. On the next oil change I was going to use Royal Purple.

Basically any modern gear oil of the correct weight will work just fine and I wouldn't bother wasting my time or money trying to source the KAZZ rebranded diff oil anyways.

Fwiw, if the diff clunks excessively, the proper break in procedure was not followed.
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Old 11-09-08, 11:07 PM
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Thanks Dave. I remember you telling me you broke it in properly. I was thinking of trying Royal Purple too.
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Old 11-10-08, 01:22 PM
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I've always used Redline Oil in my kaaz. It only clunks at very sharp, parking lot turns when i'm practically off the throttle. Never just turning on the street or with the clutch fully engaged.
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Old 11-13-08, 04:36 PM
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Originally Posted by RX-Heven
Basically any modern gear oil of the correct weight will work just fine and I wouldn't bother wasting my time or money trying to source the KAZZ rebranded diff oil anyways.
Ok. Kaaz Gear oil is GL-5 80w-90, so any 80w-90 is ok? I just went to 3 auto stores within a 1 mile radius of where I work in search of Royal Purple or Redline gear oil. I went to Advance, Murry's, Autozone and none of them had Redline at all or Royal purple in the correct weight in stock. Murrys and Autozone had Royal Purple 75w-90, but couldn't even order 80w-90 for me, which seems like bullshit because they are listed on Royal Purple's website as dealer in this location.. Murry's had their own GL-5 80w-90 brand for $10.99\gallon... and a couple other brands, valvoline, coastal etc. I wonder if this cheap Murry's stuff is any good. lol

I've read some stuff about honda guys running 75w-90 in their kaaz units. Would the 75w-90 Royal Purple be ok to use in an FC Kaaz?

Last edited by Juiceh; 11-13-08 at 05:02 PM.
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Old 11-14-08, 06:45 PM
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Mazdatrix sells KAAZ gear oil. They also say that if you use synthetic, it will destroy your diff. I dont have a KAAZ, so i dont really know. http://www.mazdatrix.com/G8LSD.HTM
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Old 11-16-08, 10:11 AM
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I did the figure 8's for the half hr, ive never got any clunking when i still drove it on the streets.
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