Redline vs Royal Purple Transmission/Differential Oil

pty370z · 12-14-2009, 11:01 AM

Hi guys,

I've noticed that most people who have changed transmission/differential oil have used Redline MT-90 75W90.

How about Royal Purple Max-Gear for the transmission/differential on our Z's..??

Thanks in advance for any input!

Philipp · 12-14-2009, 11:12 AM

I've always had better results with RedLine for the trany and diff. However I don't have any formal proof on that analysis (just personal feeling...).
Ps. I use RoyalPurple in my 370 engine!

GT Motoring · 12-14-2009, 12:07 PM

I would use Redline if you are driving the car on the street.

Only time I would suggest Royal Purple is to a race team that would be rebuilding the diff every season or every race.

Royal purple is very very thin. You want thicker gear oil.

That being said, that is why a lot of people see slight horsepower gains with Royal Purple, because it is so thin that it offers little resistance.

feelzpwr91 · 12-14-2009, 12:10 PM

Redline is the way to go, just my personal preferance

bucketman · 12-31-2009, 03:38 AM

I run royal purple in my engine. Just swapped to royal purple in my tranny. Don't like it. Did a track event and transmission shifted just fine, however on cold startup it is difficult to engage the tranny. Once it warms up everything is fine. Going to give Redline a shot.

370zproject · 02-02-2010, 01:05 PM

ok so getting close to needing another oil change... red line or royal purple... been useing royal for awhile solved the temp problem... what about red line for daily driveing.. or is mobil 1 a better go?

m4a1mustang · 02-02-2010, 01:08 PM

Redline is perfect for DD. I am running Redline engine oil and MT 90 in the trans. I will probably do the diff soon.

Kyle@STILLEN · 02-02-2010, 01:09 PM

The old Mobil 1 used to be the best bet. However, a few years ago Mobil 1 removed the Ester in their oils in an effort to keep their prices competitive in the market place.

Ester based oils are very important in NISSAN engine's. Without it you can develop a drive train tick that may not go away after your next oil change. The good thing with the Redline oil is that it is an Ester based oil. Redline is a bit more expensive than Mobil 1 but in my opinion, it's worth it.

In regards to Royal Purple, we did a test with it a few years ago. We put a vehicle on our dyno and performed a baseline dyno. Then drained all of the fluids, engine, trans, differential and did a complete fluid swap. We found a 15 horsepower gain!!! We were all blown away. However, I wouldn't run it on a street car that I wanted a long life span out of. It just seems like anything that thin would not be able to offer the protection I would want for a car that I plan on keeping for awhile.

370zproject · 02-02-2010, 01:19 PM

Quote:

Originally Posted by Kyle@STILLEN

The old Mobil 1 used to be the best bet. However, a few years ago Mobil 1 removed the Ester in their oils in an effort to keep their prices competitive in the market place.

Ester based oils are very important in NISSAN engine's. Without it you can develop a drive train tick that may not go away after your next oil change. The good thing with the Redline oil is that it is an Ester based oil. Redline is a bit more expensive than Mobil 1 but in my opinion, it's worth it.

In regards to Royal Purple, we did a test with it a few years ago. We put a vehicle on our dyno and performed a baseline dyno. Then drained all of the fluids, engine, trans, differential and did a complete fluid swap. We found a 15 horsepower gain!!! We were all blown away. However, I wouldn't run it on a street car that I wanted a long life span out of. It just seems like anything that thin would not be able to offer the protection I would want for a car that I plan on keeping for awhile.

thanks ill go with red line then

370zproject · 02-13-2010, 03:26 AM

ok so red line what type ?

kdoske · 02-13-2010, 10:40 AM

Quote:

Originally Posted by 370zproject

ok so red line what type ?

Quote:

Originally Posted by pty370z

Hi guys,

I've noticed that most people who have changed transmission/differential oil have used Redline MT-90 75W90.

says in the first post.

JSD-ZX · 02-13-2010, 11:12 AM

With the 300ZX, we have a common issue with the syncros in 4th gear. At higher rpms, dropping into 4th can be very difficult and comes with a clunking sound. I didn't have any issue with this running redline, but after I switched to royal purple for a few months it was became very prevelent.

IMO, I'm more of a fan of Redline, but royal purple is better than most brands and its to find than Redline.

NIZMOZ · 02-13-2010, 12:23 PM

Quote:

Originally Posted by bucketman

I run royal purple in my engine. Just swapped to royal purple in my tranny. Don't like it. Did a track event and transmission shifted just fine, however on cold startup it is difficult to engage the tranny. Once it warms up everything is fine. Going to give Redline a shot.

Amsoil did the same thing on my 350z 07 6mt transmission. I went back to factory and it was fine.

370zproject · 02-13-2010, 12:27 PM

iv never had to use anything other then 5w 30 in my cars so something new throws me off a bit...

12-14-2009, 11:01 AM	#1 (permalink)
pty370z Track Member Join Date: Apr 2009 Location: Panama City, Panama Posts: 654 Drives: over the speed limit Rep Power: 17	Redline vs Royal Purple Transmission/Differential Oil Hi guys, I've noticed that most people who have changed transmission/differential oil have used Redline MT-90 75W90. How about Royal Purple Max-Gear for the transmission/differential on our Z's..?? Thanks in advance for any input! __________________ 2010 Solid Red 370Z * *Touring-Sport-6MT Black Interior Performance:** STILLEN * BERK * UR * MISHIMOTO * K&N * Z1 * ZSPEED * UPREV * DBA Interior: GT-R Red Start/Stop Button * MSA Floor Mats * PW:JDM Exterior: INGS+1 * SEIBON * FUJIMURA * PW:JDM * UAM * KICS * VOLK

12-14-2009, 11:12 AM	#2 (permalink)
Philipp Base Member Join Date: May 2009 Location: Montreal Posts: 189 Drives: 370z SP MT Titanium Rep Power: 16	I've always had better results with RedLine for the trany and diff. However I don't have any formal proof on that analysis (just personal feeling...). Ps. I use RoyalPurple in my 370 engine! __________________ 2009 370z, MT & Sport package. DynoPack (stock): 268.8WHP & 224.4 Torque//K&N filters//Air cabin filter//HPS Tubes//Tune to come when VVEL...

12-14-2009, 12:07 PM	#3 (permalink)
GT Motoring Enthusiast Member Join Date: Nov 2008 Location: Chicago Burbs Posts: 489 Drives: R35 Rep Power: 840	I would use Redline if you are driving the car on the street. Only time I would suggest Royal Purple is to a race team that would be rebuilding the diff every season or every race. Royal purple is very very thin. You want thicker gear oil. That being said, that is why a lot of people see slight horsepower gains with Royal Purple, because it is so thin that it offers little resistance. __________________ http://www.gtmotoring.com/images/for...r-nagtroc1.gif Zele Authorized USA Dealer Amuse Authorized Distributor 370Z Purchasing Special through GT Motoring www.gtmotoring.com

12-14-2009, 12:10 PM	#4 (permalink)
feelzpwr91 Enthusiast Member Join Date: Oct 2009 Location: RVA Posts: 311 Drives: 09 Black370z T M6 Rep Power: 197	Redline is the way to go, just my personal preferance __________________ Rather be driving my Z

02-02-2010, 01:08 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	Redline is perfect for DD. I am running Redline engine oil and MT 90 in the trans. I will probably do the diff soon. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

12-31-2009, 03:38 AM	#5 (permalink)
bucketman Enthusiast Member Join Date: Jun 2009 Location: Prairieville,LA Posts: 306 Drives: 09 Nismo 370Z MB Rep Power: 16	I run royal purple in my engine. Just swapped to royal purple in my tranny. Don't like it. Did a track event and transmission shifted just fine, however on cold startup it is difficult to engage the tranny. Once it warms up everything is fine. Going to give Redline a shot.

02-02-2010, 01:05 PM	#6 (permalink)
370zproject A True Z Fanatic Join Date: Jul 2009 Location: Memphis Age: 35 Posts: 16,104 Drives: 09 A/T 370z blue Rep Power: 53	ok so getting close to needing another oil change... red line or royal purple... been useing royal for awhile solved the temp problem... what about red line for daily driveing.. or is mobil 1 a better go?

02-02-2010, 01:09 PM	#8 (permalink)
Kyle@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Newport Beach Posts: 626 Drives: Toyota Tundra Rep Power: 307	The old Mobil 1 used to be the best bet. However, a few years ago Mobil 1 removed the Ester in their oils in an effort to keep their prices competitive in the market place. Ester based oils are very important in NISSAN engine's. Without it you can develop a drive train tick that may not go away after your next oil change. The good thing with the Redline oil is that it is an Ester based oil. Redline is a bit more expensive than Mobil 1 but in my opinion, it's worth it. In regards to Royal Purple, we did a test with it a few years ago. We put a vehicle on our dyno and performed a baseline dyno. Then drained all of the fluids, engine, trans, differential and did a complete fluid swap. We found a 15 horsepower gain!!! We were all blown away. However, I wouldn't run it on a street car that I wanted a long life span out of. It just seems like anything that thin would not be able to offer the protection I would want for a car that I plan on keeping for awhile.

02-13-2010, 03:26 AM	#10 (permalink)
370zproject A True Z Fanatic Join Date: Jul 2009 Location: Memphis Age: 35 Posts: 16,104 Drives: 09 A/T 370z blue Rep Power: 53	ok so red line what type ?

02-13-2010, 11:12 AM	#12 (permalink)
JSD-ZX Base Member Join Date: Oct 2009 Location: Dallas Tx Posts: 29 Drives: MB 370z , 90 300zxTT Rep Power: 16	With the 300ZX, we have a common issue with the syncros in 4th gear. At higher rpms, dropping into 4th can be very difficult and comes with a clunking sound. I didn't have any issue with this running redline, but after I switched to royal purple for a few months it was became very prevelent. IMO, I'm more of a fan of Redline, but royal purple is better than most brands and its to find than Redline. __________________

02-13-2010, 12:27 PM	#14 (permalink)
370zproject A True Z Fanatic Join Date: Jul 2009 Location: Memphis Age: 35 Posts: 16,104 Drives: 09 A/T 370z blue Rep Power: 53	iv never had to use anything other then 5w 30 in my cars so something new throws me off a bit...

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