Trans 1985 4.2 Laredo CJ7 T5 Manual Transmission Oil
A syncromesh is the brass toothed ring between the gears in the transmission that are designed to equalize the speed of the gears while shifting so they do not grind. It is not in the oil. It's the additives in the oil that make it specific for synchronized transmissions, GL4. 75w90 is the viscosity of the oil. 75w when cool and 90w when at temp.So does synchromesh have a stated weight to it or is it all the same weight? Is it al 75W 90 or are there different weights? I don't see any weights listed on any of the synchromesh bottles that I've seen online.
I'm not sure of the additive CJ is speaking of, but the product I used was intended to be used straight out the the bottle. I dont remember what brand (Valvaline, Penzoil,etc ) nor do I remember if it came in different weights. Just look for Synchromesh for manual transmissions, I dont think brand will matter.So does synchromesh have a stated weight to it or is it all the same weight? Is it al 75W 90 or are there different weights? I don't see any weights listed on any of the synchromesh bottles that I've seen online.
w does not mean weight. w means winterHey guys,
Ok so I've read many threads but nothing really current. I have a, 85 CJ7 4.2 with the T5 manual transmission.
What oil do I use? It looks like it should be the synchromesh but what weight 75W90????
Any recommendations that you can give me would be much appreciated. Thanks.
Dave
Same thing you are, just do not add it if the oil is already GL4/5 rated.I'm not sure of the additive CJ is speaking of, but the product I used was intended to be used straight out the the bottle. I dont remember what brand (Valvaline, Penzoil,etc ) nor do I remember if it came in different weights. Just look for Synchromesh for manual transmissions, I dont think brand will matter.
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