Jeep: RedLine MT-90 oil for manual transmission?
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RedLine MT-90 oil for manual transmission?
Ok ... I just found out some bad news, and I wanted some good advice.
I've got a '91 XJ, with an AX-15 manual tranny. It has brass synchro rings.
The owner's manual calls for GL-5 gear oil.
I just read that was a mistake ... they ran that info for about 2 years,
then changed it to GL-3 oil.
Turns out, the sulfur and sulfite additives in the GL-5 grade oil eat up the
brass synchros.
Anybody else heard that?
What about redline MT-90? is that good? Will it do any damage? Thanks in
advance ... any info would be appreciated ... even if it's not directly
related ... :-)
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Re: RedLine MT-90 oil for manual transmission?
Redline MT-90 is ideal for the AX-5 and AX-15 transmission, I'm using it
in my own AX-15. You're right that GL-5 is not good for the synchros,
the sulphur-based additives contained in most GL-5 lubes are harsh on
soft yellow metals like brass.
Robert Dyke wrote:
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
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Re: RedLine MT-90 oil for manual transmission?
P.S. Bill's webpage is outdated as it is still showing that GL-5 is
recommended for the AX-5/15. Chrysler rescinded that GL-5
recommendation probably 5-6 years ago, changing it as you said to GL-3
which does not contain the harmful additives present in GL-5.
Jerry Bransford wrote:
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
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Re: RedLine MT-90 oil for manual transmission?
Hi Bill:
Thanks for posting that info ... but it's outdated. Chrysler recommended
GL-3 in their earlier jeeps, then switched to GL-5 when that new spec came
out. Afterwards, they learned that the sulfur and sulfite additives in GL-5
lubes are highly corrosive to brass synchro rings, which are found in the AX
5/15 trannies.
Chrysler rescinded the GL-5 recommendation about 8 years ago, and has
switched back to GL-3. Check with your dealer service dept ... they will
verify it.
Does anybody know if Redline MT-90 (synthetic, GL-4) has sulfur or sulfite
additives?
Thanks!!
"L.W. (ßill) Hughes III" <net> wrote in message
news:net...
rings.
the
in
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Re: RedLine MT-90 oil for manual transmission?
Neither Redline's MTL nor MT-90 contain any of the harsh sulphur-based
additives, both are great for the AX-5. MTL for really cold areas,
MT-90 for the rest of us. 
Jerry
Robert Dyke wrote:
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
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Re: RedLine MT-90 oil for manual transmission?
Good ... I just order 4 qts of the MT-90 from summit racing :-)
"Jerry Bransford" <net> wrote in message
news:IHzrf.17279$..
recommended
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GL-5
the AX
will
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Thanks
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