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Old 06-04-2012, 09:38 PM   #1
spoon_civic1
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Transmission oil

Hey guys, was wondering what u would recommend for tranny oil, this past sunday i was out at an event and noticed gears were not going in very smoothly after about 5-6laps, and was getting very hot. Car is a 95 325 with a s52 swap. Any help is greatly appreciated

Thanks
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Old 06-05-2012, 09:46 AM   #2
sb_600
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Royal Purple Synchromax is what I've had in my tranny for the past few years, and haven't had any issues!
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Old 06-05-2012, 11:37 AM   #3
SiR
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mobil 1 synthetic atf. easily found everywhere and relatively cheap.
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Old 06-05-2012, 02:53 PM   #4
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Quote:
Originally Posted by sb_600 View Post
Royal Purple Synchromax is what I've had in my tranny for the past few years, and haven't had any issues!
yup. all our race cars run this stuff. No issues.
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Old 06-05-2012, 05:25 PM   #5
Aero
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Arek, what are your thoughts on the Redline D4 ATF? It's what I have in mine now...
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Old 06-05-2012, 06:46 PM   #6
Hamadyr
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Redline MTL if you don't see winter use because it can be a little tough shifting when cold.

Basically, it depends on your transmission. Some BMW transmissions use ATF and others use a GL4 fluid.

There should be a sticker on it telling you whether our not it takes ATF. Some BMW experts recommend Redline MTL for ALL but you should check first.

But, as you describe problems when it gets hot it implies your synchros are not really doing their job of sowing things down to allow a smooth mesh. So, I am inclined to say MTL.
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Old 06-06-2012, 10:18 AM   #7
SiR
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d4 atf is good as well. This debate is akin to which oil should I put in my engine.
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Old 06-06-2012, 11:34 PM   #8
spoon_civic1
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I think im going to go with the royal purple synchromax stuff, thanks for all your help guys, really appreciate it
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