Lube for the rear end
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Joined: May 2004
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From: texas
fluids for diff
is there any reason people dont use the factory synthetic fluid in there diffs or trans? i have allways used it i know it is exspensive but i work for a dodge dealer and have a supply of 75-140 and 75-90 synthetic in the garage so it doesnt cost me much
. i read a post were american axles reccomend 75-90 synthetic and i know dodge tells us to put 75-140 synthetic in them when we service or repair them.
d12
. i read a post were american axles reccomend 75-90 synthetic and i know dodge tells us to put 75-140 synthetic in them when we service or repair them. d12
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Joined: Dec 2003
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From: Louisiana
Mark, No additive is required. This is clearly stated in the owners manual. The rear end is not a cluch setup from what I learned in earlier discussion( I do read these things with coffee
)& as informed on the thread this was confirmed by a rep with AAM..
As for the fluid weight the manual does recommend the lower thickness but if you tow heavy it's up to you if thicker is better.
I am running the 75/90 just for warrenty reason.
)& as informed on the thread this was confirmed by a rep with AAM..As for the fluid weight the manual does recommend the lower thickness but if you tow heavy it's up to you if thicker is better.
I am running the 75/90 just for warrenty reason.
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Joined: Jan 2004
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From: Oregon
durango12, I don't have a problem with the DC synthetic, it was just that the Redline synthetic has a good reputation and was cheaper...
drb-600, I actually bought my Redline at the Dodge dealership because I needed it right away, but I'm sure you could get a better price from one of the mail order places.
LRAmberson, At least according to the parts guy at my dealership, 75-140 will not void warranty, as long as it is full synthetic that meets GL-5.
drb-600, I actually bought my Redline at the Dodge dealership because I needed it right away, but I'm sure you could get a better price from one of the mail order places.
LRAmberson, At least according to the parts guy at my dealership, 75-140 will not void warranty, as long as it is full synthetic that meets GL-5.
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Joined: Jun 2003
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I used Mobil 1 75W-90 in both axles. Relatively easy to find, works good. Concerns I've heard about Redline are that it's possibly not the best oil for extended intervals, especially if exposed to water, in spite of it being well liked on the track.
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From: I'll look into that!
Originally posted by LRAmberson
Mark, No additive is required. This is clearly stated in the owners manual. The rear end is not a cluch setup from what I learned in earlier discussion( I do read these things with coffee )& as informed on the thread this was confirmed by a rep with AAM..
As for the fluid weight the manual does recommend the lower thickness but if you tow heavy it's up to you if thicker is better.
I am running the 75/90 just for warrenty reason.
Mark, No additive is required. This is clearly stated in the owners manual. The rear end is not a cluch setup from what I learned in earlier discussion( I do read these things with coffee
)& as informed on the thread this was confirmed by a rep with AAM..As for the fluid weight the manual does recommend the lower thickness but if you tow heavy it's up to you if thicker is better.
I am running the 75/90 just for warrenty reason.
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Joined: Oct 2002
Posts: 7,543
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From: Tomball, Texas
I'm about to service the rear end on mine. My local auto parts store carries Lucas 75w-90 synthetic gear lube. Is this stuff any good? The parts man recommended Lucas for my truck.
MikeyB
MikeyB
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Joined: Jan 2004
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From: Glendale AZ
The Mopar oil is EXPENSIVE(My parts guy wanted 32/qt) and you know it's just someone elses oil with their label...
The dealerships all use Redline('round here anyway) when it's not a warranty issue. If DC's paying they use Mopar oil.
I just put in AMSOIL 75/140 at $12/qt & as stated before you don't need the additive, I do feel as if I just bought from Amway though...
The dealerships all use Redline('round here anyway) when it's not a warranty issue. If DC's paying they use Mopar oil.
I just put in AMSOIL 75/140 at $12/qt & as stated before you don't need the additive, I do feel as if I just bought from Amway though...
How is it better and why isn't it API certified?
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Joined: Oct 2002
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From: Tomball, Texas
Originally posted by silver_goat
I like the Royal Purple full synthetic. It is a bit pricey ($9 qt.) but comes in 75/140. Most others I have seen are either 75/90 or 90/140. It is a GL-5 lube.
I like the Royal Purple full synthetic. It is a bit pricey ($9 qt.) but comes in 75/140. Most others I have seen are either 75/90 or 90/140. It is a GL-5 lube.
MikeyB
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From: Beaverton, Oregon
Originally posted by silver_goat
I like the Royal Purple full synthetic. It is a bit pricey ($9 qt.) but comes in 75/140. Most others I have seen are either 75/90 or 90/140. It is a GL-5 lube.
I like the Royal Purple full synthetic. It is a bit pricey ($9 qt.) but comes in 75/140. Most others I have seen are either 75/90 or 90/140. It is a GL-5 lube.
DON"T use the 75/140 it will mess up your rearend. The AAM axels state use 75/90 ONLY
Axels DO NOT REQUIRE any limited slip oil additive(friction modifiers)
So whatever yo do don't do it don't do it don't do it