Re: [Chrysler300] Amsoil synthetic gear lube study
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Re: [Chrysler300] Amsoil synthetic gear lube study





For anyone interested, Amsoil had a third party conduct an in-depth study on synthetic differential gear lubes. The study can be found at    www.syntheticwarehouse.com/brochures/g2457_gearlube_study.pdf  Please note that there is an _  (underscore) between "2457_gearlube_study" that does not show up
in the webaddress.
Jim Bartuska
Club Stores
 
 
In a message dated 2014/08/01 05:33:37 P.M. Eastern Daylight Time, Chrysler300-noreply@xxxxxxxxxxxxxxx writes:
 

   Do not worry about using GL-5 in our differentials. For decades there has been sulphur in gear lube being it is an anti scuff/anti-weld additive. GL-5 has almost 30% more anti scuff protection as compared to GL-4. Note; Our transmissions do not use gear oil as lube.  I could understand why the oil would cause shifting problems, being it would not allow the syncro to clutch quickly and or correctly. 
 
         Rick
 
    Post Script; I cannot think of any brass in our 8 3/4 rear axles. I have had many of these apart for rebuild or repair Re-clutch power lock sure grip and limited slip  1957 to 1973. 
 

To: jymopar@xxxxxxxxxxxxxxx
CC: chrysler300@xxxxxxxxxxxxxxx
From: Chrysler300-noreply@xxxxxxxxxxxxxxx
Date: Wed, 30 Jul 2014 10:45:26 -0400
Subject: [Chrysler300] gear lube

 

Found out some interesting ,-- could be important ---stuff.

 

In Auto Restorer; GL-5 gear lube has sulphur and other additives that attack brass, so not for use on manual transmissions or rear axles with brass / bronze parts ; GL-4 OK ; I know 300F has brass thrust bearings in Axle center (Timken style rear wheel bearings) , many cars of our vintage had brass transmission syncros , brass bushings in diff, etc . I have been using synthetic 75W Mobil 1, not sure now if GL-5 or 4; GL-5 made for all 100% steel bearings, like ball bearings etc typical of new cars , EP additives help those, are  in GL-5

 

Heads up!

 

John Grady, PE

 

 




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Posted by: BARJAM300@xxxxxxx


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