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Jeep Wrangler YJ
YJ General Discussion
Improving synchro shifting problems by using different gear lube weights or additives?
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<blockquote data-quote="Gilaguy23" data-source="post: 429159" data-attributes="member: 19498"><p>Your not the first Ive read about using ATF in a AX15. Like any oil thread one can get numerous arguments as to using this or that for longevity and best shifting. The 30wt in the T case recommended by the rebuilder is a first to me though. I run Castrol HD 30wt in my AX5 and have used 90wt GL4. With the 90 its near impossible to shift into 1st when its in the winter here in AZ. Once its warmed up it shifts OK in every gear. You could try a 30wt and see how it does. If its still grinding away its likely the syncros going south. Todays gear, trans oils,diff oils, atf's, and the dozen types of coolants have become pretty much a mystery deciphering what you need. your basic MT-1 designated GL5 "gear oil" is NOT what you want to run in the trans and unfortunately that's what most chain auto parts stores sell. Places like Summit and Jegs do sell GL-4 type syncro OK lubes for these type trannies.</p></blockquote><p></p>
[QUOTE="Gilaguy23, post: 429159, member: 19498"] Your not the first Ive read about using ATF in a AX15. Like any oil thread one can get numerous arguments as to using this or that for longevity and best shifting. The 30wt in the T case recommended by the rebuilder is a first to me though. I run Castrol HD 30wt in my AX5 and have used 90wt GL4. With the 90 its near impossible to shift into 1st when its in the winter here in AZ. Once its warmed up it shifts OK in every gear. You could try a 30wt and see how it does. If its still grinding away its likely the syncros going south. Todays gear, trans oils,diff oils, atf's, and the dozen types of coolants have become pretty much a mystery deciphering what you need. your basic MT-1 designated GL5 "gear oil" is NOT what you want to run in the trans and unfortunately that's what most chain auto parts stores sell. Places like Summit and Jegs do sell GL-4 type syncro OK lubes for these type trannies. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Improving synchro shifting problems by using different gear lube weights or additives?
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