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Old 03-14-2014, 09:02 PM   #26
BlacklandCamper
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Join Date: Sep 2013
Location: Farmersville, TX
Posts: 238
Re: Anyone have problem with their posi chattering?

Last time I opened a new bottle of Royal Purple, it smelled burnt. I don't care what anyone says about it being "more refined", NEW oil, synthetic, or dead dino, should NEVER smell burnt.

I use Castrol Tectron 75W-90. It contains the friction modifier already, and smells like new oil should. I have used it in several different trucks, with a range of different axles, used for different purposes. I have never had a problem.
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Grunt: 1971 C20 Custom Camper. Runs/Drives/Kinda stops. 350Ci, TH350. 4.10:1 D60. Eight Lug LWB is more better. Hell no its not fast!

Donkey: 93 Nissan D21, the farm truck. My 1/2 ton SWB. The Indomitable Datsun.
1st BN 3rd MAR. '00-'04
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Old 03-14-2014, 09:40 PM   #27
o6r1man
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Location: KS
Posts: 268
Re: Anyone have problem with their posi chattering?

Update: I drained the diff fluid and filled it back up with valvoline 80/90 and the ford additive. I drove it about 3 miles and it chattered a few times when I first set off, which I expected. I got to a big parking lot and did the 10 circles each way, I would say it is 99.5 better so far. I will get some more miles on it tomorrow and see how it does...
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Old 03-14-2014, 09:51 PM   #28
outlaw 3454
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Location: brandenburg ky
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Re: Anyone have problem with their posi chattering?

im telling you driving it in circles works!! it has for years.
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