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Old 02-15-2006, 10:42 AM   #1
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transmission fluid change

Hey everyone, I have a quick question about getting my tranny oil changed. I did a search but couldnít find the answer I was looking for.

So my car has been shifting not so smooth lately, I want to try some Redline or Royal Purple fluid. I called a transmission place today and the guy said something about me needing 12 quarts? I think he was going to completely flush it out.

I donít need it completely flushed out, do I? How many quarts of oil should I bring?

Thanks for your time.
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Old 02-15-2006, 11:50 AM   #2
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Auto?

It must be an automatic, right?

12 quarts of Redline is overkill! I would just use good name-brand tranny juice.

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Old 02-15-2006, 11:53 AM   #3
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mazda swapped it out for me and only used 2 quarts of the transmission fluid and 2 quarts of the differential both redline. You can look at the car manual and i believe one is 1.4L in size and the other is 1.7L. assuming the car is a stick
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Old 02-15-2006, 12:12 PM   #4
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12 quarts is absurd. You don't need it flushed out; just drain the oil that's in there and replace it.

I replaced my manual trans fluid with Royal Purple and it required just over 2 qts; get 3 bottles and that will cover it just fine. The rear differential requires just under 2 qts so if you want to replace both, get 5 bottles and that will take care of it.
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Old 02-15-2006, 12:55 PM   #5
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thanks for the replies. my car is a manual. When you take your car somewhere to have the tranny fluid changed, do they automatically do the differential as well?

thanks.
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Old 02-15-2006, 01:25 PM   #6
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Quote:
Originally Posted by cgseanp
thanks for the replies. my car is a manual. When you take your car somewhere to have the tranny fluid changed, do they automatically do the differential as well?

thanks.
No.
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Old 02-15-2006, 01:33 PM   #7
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No.
ohh. Sorry if this is a dumb question, but do both the tranny and differential use the same oil? is 75W90 the correct grade of oil? I was looking at redline online, and they have the 75w90 and the MTL.. I'm confused as to what I should buy.

thanks for the help
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Old 02-15-2006, 01:41 PM   #8
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You need to make sure that the differential oil is suitable for a limited slip differential, assuming you have the 6-speed manual GT version of the car.
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Old 02-15-2006, 01:47 PM   #9
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Check out the DIY thread DIY: Transmission and Differential fluid replacement

Post 46 shows what to get.
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Old 02-15-2006, 01:47 PM
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