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View Full Version : Trans fluid help

Enders.S13
02-16-2012, 08:13 PM
I bought three bottles of MasterPro trans fluid for my 90 240sx KA24DE and on the back it says it covers G4 and G5 service. I know I need G4 for the transmission. But whats confusing me is on the front it just says G5 fluid. I don't want it to eat my synchros up. If I can get a little clarification that would be awesome.
Frank_Jaeger
02-16-2012, 08:57 PM
I bought three bottles of MasterPro trans fluid for my 90 240sx KA24DE and on the back it says it covers G4 and G5 service. I know I need G4 for the transmission. But whats confusing me is on the front it just says G5 fluid. I don't want it to eat my synchros up. If I can get a little clarification that would be awesome.

I've read a lot about people swearing for and against G5 fluids. I think only certain brands are okay. Wait for someone with firsthand experience to chime in about MasterPro.
fliprayzin240sx
02-16-2012, 09:44 PM
I only run GL4 specific oil...
Enders.S13
02-16-2012, 09:54 PM
Well there was Royal Purple that said it could be used for G4 and G5 applications but that shit was like 21 dollars a bottle. I heard Redline is really good though.
fliprayzin240sx
02-16-2012, 09:58 PM
If you can wait...order this...

http://www.amsoil.com/StoreFront/images/mtg_qt_640pxh.jpg
wangan_cruiser
02-16-2012, 10:02 PM
redline mt90 for manual transmission is good. shifts smooth and easy on synchros. been running on it for 5 yrs from my first hatch and my current one. no problem. need 2 and 1/2 bottle to fill the transmission up.
rcdad123
02-16-2012, 11:20 PM
gl5 has an additive for limited slip differentials. i have never heard of gl5 messing up synchros.
Enders.S13
02-17-2012, 02:08 AM
gl5 has an additive for limited slip differentials. i have never heard of gl5 messing up synchros.

Then again I saw it on Nico lol. I'm going to try and see where I can pick up some redline or the AMS fluid.
Enders.S13
02-17-2012, 01:19 PM
Called the dealership and they said they have no idea about the difference between the two.
driftxninja
02-17-2012, 08:30 PM
i used gl5 in my 91 s13. fucked up my sychros bad. then i got a different 240 an 89 and used Penzoil Synchro mesh worked great. only like 7 bucks a bottle at auto zone. used that on multiple 240s never a problem
Enders.S13
02-18-2012, 03:08 PM
I'm returning this stuff and ordering redline MT-90 GL4 specific trans fluid.
fliprayzin240sx
02-18-2012, 04:02 PM
My SR tranny hated RP...shit would grind cold in the mornings and catch 2nd once in a while. Went and used AMSOIL, smooth like buttah...
Enders.S13
02-18-2012, 04:10 PM
My SR tranny hated RP...shit would grind cold in the mornings and catch 2nd once in a while. Went and used AMSOIL, smooth like buttah...

Yeah right now it grinds just a tad but then sometimes it won't and it'll go right into gear no problem. It feels really notchy too.