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Trans Fluid


1qwk767

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IM a replacing the Trans in my 1g FWD 5spd this week, I plan on using royal purple gear oil

 

my questions are as followed:

 

1. What weight should I use I know Royal Purple has 2 weights 75w90 and 75w150, I think the 75w150 is way to thick but I wasnt sure what to use.

 

2. I know my trans takes 2.4qts of fluid would I be fine with doing 2qts of normal fluid and .4qts of the Royal Purple Synchromax, or should I just run straight gear oil.

 

 

TIA for all you help guys

Mark

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is the transmission you're putting in recently rebuilt or just a stock one with lower miles? What made you decide on going to a gear oil?

 

Synchromesh, which has a fond following in DSM land, is about the equivelant of 80W, so I would lean towards the idea that the 75-150w would be too thick. You can mix match synthetics just fine, as long as you're confident that you'll be happy with the resulting viscosity.

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hrm...I honestly don't know what the stock fill was supposed to be on those cars. I have the factory manual on a CD somewhere, I'll have to try to find it and look it up.

 

I always used Synchromesh with good results. If you're feeling a little more expensive, there's always BG Synchroshift as well which is very highly regarded for those transmissions, especially stock.

 

You could always shoot Sheperd an email

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true, I have the haynes manual sitting right infront of me and its says 75-85w90 so Autozone carried the 75w90 and 75w150 in RP along with the RP syncromesh shit

Im going too take it as your not having shifting issues now.Syncromesh is a much lighter oil, and will cure most cold weather shifting issues(cold start's). But i do not recommend running it in your's.go with the 75w90 and you should be fine.unless you are having shifting issues.mixxing the two is not a great idea.

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