RE: [Chrysler300] Amsoil synthetic gear lube study

["'John Grady' jkg@xxxxxxxxxxxxxxxxx [Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>]

Hi Rick..same way I felt--- but thrust pins in thrust block in 8 3/4 diff discussed in other email are in fact brass. Someone noted maybe only in sure grip..do not know, but do know in several I took apart they were there. And important functionally.  = ? Matter of degree?  GL-5 eats brass if you believe article. (due to sulphur lube in  it)

 

That link is a great reference..main point is synthetic anything in oils is plain better than non synthetic,  ---but have to watch additive packages. Same as motor oil, and flat cams. …..

 

SAE test/paper I saw / read about had older 350 camaro, I think it had 85k miles,  running mobil 1, lab test every 1000 miles, oil still OK at 18000 but had  lost additives unacceptably by then ; made me feel Ok about 10 k mile change with Mobil 1. Drove JEEP 4.0 330 k miles on this idea , engine still perfect . 4.0 a great engine anyway, but you get it. (99-01 not so good --head cracks,-- however) .Understand all those who are happy with old arrangement. Your call. New oil IS better.

 

Air cooled Onan generator I take care of, now equivalent of 1,000,000 miles at ~ 60 mph, (1800 RPM<) off grid island summer camp, circa 1950, (60 + years!) loves Mobil one and Harley synthetic/Mobil 1 ; much more tolerant of inherent air cooled high temps, better compression, lower running temp, more electricity, by about 10%,  before slowing down. Stuff shines at high temps. And cold. Used to use 20-50 racing Valvoline in it, in fall , hard to crank/start, and it burned oil. No more.

 

I believe, but more than opinions, there are real reasons .

 

John

 

From: BARJAM300@xxxxxxx [mailto:BARJAM300@xxxxxxx] 
Sent: Saturday, August 02, 2014 11:49 AM
To: rixpac@xxxxxxx; jkg@xxxxxxxxxxxxxxxxx; jymopar@xxxxxxxxxxxxxxx
Cc: chrysler300@xxxxxxxxxxxxxxx
Subject: 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

 

 

 





[Non-text portions of this message have been removed]



------------------------------------
Posted by: "John Grady" <jkg@xxxxxxxxxxxxxxxxx>
------------------------------------

To send a message to this group, send an email to:
Chrysler300@xxxxxxxxxxxxxxx

To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or
go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button

For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm

For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
------------------------------------

Yahoo Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/Chrysler300/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/Chrysler300/join
    (Yahoo! ID required)

<*> To change settings via email:
    Chrysler300-digest@xxxxxxxxxxxxxxx 
    Chrysler300-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    Chrysler300-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo Groups is subject to:
    https://info.yahoo.com/legal/us/yahoo/utos/terms/