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What Transmission Fluid/Gear oil do you use?

dsmkid

Well-known member
Joined
Sep 27, 2011
Messages
61
Location
Denver, Co
Im planning on doing a flush today on the gvr4 I just got and just wondering what you all would suggest. What do you use and have good luck with? I am experiencing some 2nd gear grinds at high rpm and its hard to get into 2nd at 7k at the track. I know the culprit is probly not a fluid problem but hopefully it can help it a bit. Keep in mind I live in Colorado and we do get Cold winters, sub freezing. This will be what I use all this winter. Thanks in advance!
 

Brunoboy

Well-known member
Joined
Apr 25, 2008
Messages
2,880
Location
San Bruno,CA Home of SFO
MT-90 x3 in the trans and Heavy Duty Shock Proof in the X-case and Rear Diff.
 

Launch

Well-known member
Joined
Aug 17, 2006
Messages
350
Location
Texas
Only motul in my high tq trans, wax kills. shockproof in transfer and rear
 

Terry Posten

Well-known member
Joined
Dec 16, 2003
Messages
9,009
Location
Davenport, Iowa USA
Mitsubishi Diaqueen in the transmission and Redline Heavy Duty Shockproof.
 

Dark_Horse

Well-known member
Joined
Sep 6, 2010
Messages
303
Location
Morrison, CO
Since you live in Colorado, I wouldn't run heavy shockproof in the winter. Heavy doesn't like temps below 45 degrees.
 

cupajoe

Well-known member
Joined
Mar 1, 2010
Messages
343
Location
Cocoa, FL
Mitsubishi Diaqueen in the transmission and Heavy shockproof in Tcase/rear diff. But I'm going to switch my transmission fluid to MT-90(2/3) and MTL.(1/3)
 

GSX_TC

Well-known member
Joined
Apr 7, 2011
Messages
3,722
Location
Houston, Texas
BG syncro shift
 

GSX_TC

Well-known member
Joined
Apr 7, 2011
Messages
3,722
Location
Houston, Texas
75/90 seems to be a tried and true for the trans atleast
 

turbofonz

Well-known member
Joined
Sep 27, 2006
Messages
475
Location
Granby, MA
I'd run straight MT90 for now.

When spring comes around and you start beating on it a little more toss in some shockproof for some...shock proofing.
 

Terry Posten

Well-known member
Joined
Dec 16, 2003
Messages
9,009
Location
Davenport, Iowa USA
You don't want to put shockproof in the transmission. The syncros don't like it.
 

GSX_TC

Well-known member
Joined
Apr 7, 2011
Messages
3,722
Location
Houston, Texas
shockproof is best in the T-case and rear diff right?
 

Terry Posten

Well-known member
Joined
Dec 16, 2003
Messages
9,009
Location
Davenport, Iowa USA
Yes, 100%. But if you drive in cold weather, may want to run a bit thinner when temps drop below 40.
 

GSX_TC

Well-known member
Joined
Apr 7, 2011
Messages
3,722
Location
Houston, Texas
glad i'll be in one of the hottest dam places, Houston Tx.
 

boostedinaz

Well-known member
Joined
Apr 20, 2006
Messages
4,085
Location
Scottsdale, AZ
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