Changed MT fluid to Redline

davidyan · 11-28-2009, 08:41 PM

Changed to Redline MT-90 (GL4, 75w90). Like others have noticed, there is a huge improvement in shifting afterwards.

davidyan · 11-28-2009, 08:44 PM

Sorry- wrong section, I know. I can't figure out how to move it.

m4a1mustang · 11-28-2009, 09:42 PM

Can you be more descriptive? I've been thinking about doing this.

vortrex · 11-28-2009, 10:52 PM

Quote:

Originally Posted by m4a1mustang

Can you be more descriptive? I've been thinking about doing this.

I put MT-90 in my lotus (notorious for horrible shifting) and it literally felt like I had a different car. the shifting was suddenly smooth as could be. I was blown away by the improvement.

Matt · 11-28-2009, 10:54 PM

Quote:

Originally Posted by m4a1mustang

Can you be more descriptive? I've been thinking about doing this.

KakimotoRift · 11-28-2009, 11:51 PM

I love Redline gearbox oil, the best I've ever experienced.

m4a1mustang · 11-28-2009, 11:55 PM

I am going to have to order some and take care of it at my next oil change.

Matt · 11-29-2009, 12:09 AM

Is there any need to wait x miles before changing the MT fluid like the engine oil? How often does the stock MT fluid need to be replaced vs a synthetic?

How much would a shop usually charge for flushing/refilling if I provide the fluid?

SmoothZ · 11-29-2009, 10:32 AM

+1 on the Redline fluid. I did the tranny and rear diff fluid swap at my 30k mile service. The car definitely shifts smoother.

kenchan · 11-29-2009, 11:28 AM

im thinking about doing this on my G. it's a notchy gearbox from the getgo. the Z, not so much...to me it's pretty smooth. not toggle switch smooth like my honda's gearbox but smooth enough.

CBRich · 11-29-2009, 11:53 AM

I may also have to try this. As noted the 370 has decent shifting but coming from a Honda it just doesn't have that smooth snick action.

spearfish25 · 11-29-2009, 06:30 PM

I did two DIYs in the DIY section on tranny and rear diff oil changes. I put the appropriate Redline products in each. I did the rear diff first but didn't notice any difference really (not sure I would really notice anything). The rear diff oil was NASTY, so that alone made the change worth it. After I changed the tranny oil (which looked pristine), the car shifts much much smoother. With a cold start, it shifted like a warm transmission instead of the clunky, stiff shifts you normally get before the car warms up. Definitely worth changing out both oils. I did it at 3k miles. Changed the motor oil to Redline at 5k.

DIY: Transmission Oil Change
DIY: Rear Differential Oil Change

theDreamer · 11-29-2009, 06:35 PM

Will probably do this at my next oil change, which will be around 12,000 miles (currently at 10,000).

davidyan · 12-02-2009, 03:00 AM

Quote:

Originally Posted by m4a1mustang

Can you be more descriptive? I've been thinking about doing this.

Sure, here are the main differences upon the change to Redline MT-90 in the 6MT gearbox that I have noticed so far:

- easier gear engaging when cold, esp. 2nd gear
- smoother downshifts
- gearbox whine seems to be slightly quieter than before (not significant- could be caused by other factors).

Haven't tested under high RPM shifting yet, but in my other car, it seems to engage better with the Redline fluid.

TipsZ · 12-02-2009, 08:24 AM

Im in for a Group Buy...

11-28-2009, 08:41 PM	#1 (permalink)
davidyan Base Member Join Date: Jun 2009 Location: CA Posts: 244 Drives: PG 370Z Sport 6MT Rep Power: 15	Changed MT fluid to Redline Changed to Redline MT-90 (GL4, 75w90). Like others have noticed, there is a huge improvement in shifting afterwards.

11-28-2009, 09:42 PM	#3 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Can you be more descriptive? I've been thinking about doing this. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

11-28-2009, 11:55 PM	#7 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	I am going to have to order some and take care of it at my next oil change. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

11-29-2009, 12:09 AM	#8 (permalink)
Matt A True Z Fanatic Join Date: Oct 2009 Location: Augusta, GA Age: 41 Posts: 1,680 Drives: 2010 Avalanche LT Rep Power: 18	Is there any need to wait x miles before changing the MT fluid like the engine oil? How often does the stock MT fluid need to be replaced vs a synthetic? How much would a shop usually charge for flushing/refilling if I provide the fluid? __________________ "Any man who can drive a 370z while kissing a pretty girl is simply not giving the Z the attention it deserves." Albert Einstein....modified.

11-29-2009, 06:30 PM	#12 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	I did two DIYs in the DIY section on tranny and rear diff oil changes. I put the appropriate Redline products in each. I did the rear diff first but didn't notice any difference really (not sure I would really notice anything). The rear diff oil was NASTY, so that alone made the change worth it. After I changed the tranny oil (which looked pristine), the car shifts much much smoother. With a cold start, it shifted like a warm transmission instead of the clunky, stiff shifts you normally get before the car warms up. Definitely worth changing out both oils. I did it at 3k miles. Changed the motor oil to Redline at 5k. DIY: Transmission Oil Change DIY: Rear Differential Oil Change __________________ 2013 Cadillac V-Wagon, RIP Z

11-28-2009, 08:44 PM	#2 (permalink)
davidyan Base Member Join Date: Jun 2009 Location: CA Posts: 244 Drives: PG 370Z Sport 6MT Rep Power: 15	Sorry- wrong section, I know. I can't figure out how to move it.

11-28-2009, 11:51 PM	#6 (permalink)
KakimotoRift Base Member Join Date: Nov 2009 Location: Z Island Posts: 10 Drives: 370Z 6MT (40th_Anni) Rep Power: 15	I love Redline gearbox oil, the best I've ever experienced.

11-29-2009, 10:32 AM	#9 (permalink)
SmoothZ A True Z Fanatic Join Date: Nov 2009 Location: Arrakis Posts: 7,952 Drives: giant sandworm Rep Power: 35	+1 on the Redline fluid. I did the tranny and rear diff fluid swap at my 30k mile service. The car definitely shifts smoother.

11-29-2009, 11:28 AM	#10 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141520	im thinking about doing this on my G. it's a notchy gearbox from the getgo. the Z, not so much...to me it's pretty smooth. not toggle switch smooth like my honda's gearbox but smooth enough.

11-29-2009, 11:53 AM	#11 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	I may also have to try this. As noted the 370 has decent shifting but coming from a Honda it just doesn't have that smooth snick action.

11-29-2009, 06:35 PM	#13 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4210	Will probably do this at my next oil change, which will be around 12,000 miles (currently at 10,000). __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

12-02-2009, 08:24 AM	#15 (permalink)
TipsZ Track Member Join Date: Mar 2009 Location: Lithia, FL Age: 50 Posts: 552 Drives: 09 Nissan 370z CS M6 Rep Power: 186	Im in for a Group Buy... __________________ Dynojet 285 HP/245 TQ (pre CBE)// Agency Power CBE // GTM Test Pipes // JWT Pop Chargers // B&M Short Shifter // Eibach Springs // Powder-coated Akebono's // Powder-coated Strut Bar // Black Chromed 19" Rays // // Redline Designs Graphics TipsZ journal

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