doing clutch soon...anything to watch out for?

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12-10-2010, 02:14 AM

#41

Nealoc187

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Quote:

Originally Posted by crackhead

IIRC, the weight of GM Syncromesh gear oil is 5w30 and our trans uses 75w90. It is a GL-4 gear oil though. I don't think it would be a problem to run it for a while, but I wouldn't use it long-term in my transmission. I don't want to say it was the lighter weight gear oil causing the leak, but I wouldn't rule it out as a possibility. You might have also damaged the seal when re-installing the axle. I would also check for play in that differential bearing. Swazey mentioned the 85w90 gl-4 dino oil that I've been using for a couple years now and I don't have any real complaints (it's stiff during cold weather until the trans warms up). At Napa it was about the same price as the synchromesh and a few of the stores around town stocked it. Royal Purple = GL-5 and the first dead transmission for crackhead

. I started using the Napa stuff after that. Going to put MT90 into the trans as soon as I decide to fix my car. crackhead = lazy

If I do one thing every couple days I might finish next year (car has been waiting to get fixed for about a year now). My new engine did finally show up, so I guess I should really start working on it.

SAE gear oils and SAE engine oil viscosity ratings are different. 5w30 motor oil is approximately the same viscosity as a 75w85 gear oil.

the rest of your post is pretty much spot on.

I have used synchromesh and it works just fine if you're not beating the car hard. it doesn't have the film strength of an Amsoil or Redline or Motul 300 so you would not want to use it over one of those if you are going to be driving the car really hard or putting a lot of torque through the transmission. for everyday driving though it would be just fine in a maxima. it can help with synchro problems too if you've got a synchro that is on its last leg. i would not use it in a trans that you're going to be driving hard though.