Anyone ever experience this after powertrain fluid changes?

BlackZMamba · 07-02-2020, 04:21 PM

Has any of you ever experienced a torque loss or less aggressive feel after replacing both transmission and differential fluid from stock to Redline?

Both were replaced at the same time. My car just doesn't feel the same anymore. It's a 2013.

ZontheRocks · 07-02-2020, 06:02 PM

I did not notice any adverse effects after changing my differential and transmission fluids. Are you able to use your EcuTek app to check run times to 60mph, 100mph, 1/4 mile, etc.? Other than getting it back on the dyno, I am not really sure what to suggest for you (without CEL codes present).

geeteezee · 07-02-2020, 07:29 PM

I swapped over to Redline MT-85 yesterday, hoping to smooth out some shifting notchiness, (barely feels better) and thought my butt dyno detected a loss in power. Seemed fine today however. I didn't do the diff.

Rusty · 07-02-2020, 09:49 PM

I didn't notice anything different when I switched to Redline in the tranny. Still grinds a little going from 6th to 5th.

With the OS Giken diff. You have to use 80w-250 lube to keep it quite. That stuff is thick.

bcrider · 07-03-2020, 10:48 AM

Have the new fluids possibly reduced noise and vibration to the point the old butt dyno makes it feel more refined, possibly slower?

Tractionless · 07-07-2020, 11:15 AM

I assume the OP has a 6MT, if not and using Redline in 7AT may be an issue in comparison to OE fluid.

BlackZMamba · 07-09-2020, 05:30 PM

Quote:

Originally Posted by Tractionless

I assume the OP has a 6MT, if not and using Redline in 7AT may be an issue in comparison to OE fluid.

Yeah I drive a 6 MT

BlackZMamba · 07-09-2020, 05:31 PM

Quote:

Originally Posted by bcrider

Have the new fluids possibly reduced noise and vibration to the point the old butt dyno makes it feel more refined, possibly slower?

Definitely feels smoother; maybe i was just used to the more touchy aggressive feeling

theART · 07-09-2020, 08:11 PM

nice tags!

.ew sucks dementia joe's kok, .jar's a hermaphrodite, ew sux pearl white kok, jar has both a kok n pvssy!

axmea? · 07-09-2020, 11:30 PM

I tried Nissan, Redline, Amsoil, and Motul. Nissan was fine and regressed badly when I switched to Redline and Amsoil.

I was happiest when I used Motul.

Nothing to do with torque and don't think it would affect that, it was more about how it felt and how smooth it was.

BlackZMamba · 07-29-2020, 10:20 AM

Quote:

Originally Posted by axmea?

I tried Nissan, Redline, Amsoil, and Motul. Nissan was fine and regressed badly when I switched to Redline and Amsoil.

I was happiest when I used Motul.

Nothing to do with torque and don't think it would affect that, it was more about how it felt and how smooth it was.

thanks I might go back to Nissan. The smell is also highly noticeable.

Zyonara91 · 07-30-2020, 04:47 PM

This is the thing. . .

I had Nissan OEM fluid and swapped it out for MT85. It was terrible when cold, however once warmed up it was good. However I felt the car struggle a bit, gears were getting notchy when shifting at times. So I dumped the Redline, went back to Nissan OEM, never had an issue, cold or hot. I think I'll try Amsoil next for kicks.

For the differential I used Redline. No issues with it whatsoever. I like using one brand across the board, I'm OCD like that. I think I'll go Amsoil in Diff as well next change.

BlackZMamba · 07-30-2020, 05:23 PM

update - car is performing much better. However, the transmission fluid smells when i step on it a little. It's definitely a different smell than what I'm used to.

Rusty · 07-30-2020, 05:28 PM

Quote:

Originally Posted by BlackZMamba

update - car is performing much better. However, the transmission fluid smells when i step on it a little. It's definitely a different smell than what I'm used to.

You sure that's not your own breath blowing back into your face.

BlackZMamba · 07-30-2020, 05:54 PM

Quote:

Originally Posted by Rusty

You sure that's not your own breath blowing back into your face.

lmao i'm pretty sure. If you ever do the fluid change yourself and go from OEM to Redline you'll know exactly what I'm talking about.

07-02-2020, 04:21 PM	#1 (permalink)
BlackZMamba Enthusiast Member Join Date: Oct 2012 Location: La Salle, IL Posts: 345 Drives: 2013 Z @ 321 whp Rep Power: 13	Anyone ever experience this after powertrain fluid changes? Has any of you ever experienced a torque loss or less aggressive feel after replacing both transmission and differential fluid from stock to Redline? Both were replaced at the same time. My car just doesn't feel the same anymore. It's a 2013. __________________ Mods: ECUtek \| Stillen \| Fujimura \| BC Racing \| SPC \| Avant Garde \| Fast Intentions \| Z1 Motorsports \| Akebono \| Cooper \| Redline \| Motul \| Mobil 1 Last edited by BlackZMamba; 07-02-2020 at 05:28 PM.

07-02-2020, 06:02 PM	#2 (permalink)
ZontheRocks Track Member Join Date: Mar 2017 Location: Central Florida Posts: 959 Drives: 2016 Nissan PW 370Z Rep Power: 34535	I did not notice any adverse effects after changing my differential and transmission fluids. Are you able to use your EcuTek app to check run times to 60mph, 100mph, 1/4 mile, etc.? Other than getting it back on the dyno, I am not really sure what to suggest for you (without CEL codes present). BlackZMamba likes this. __________________ '16 Pearl White Sport \| Stillen Gen. 3 \| Motordyne ART \| Motordyne Shockwave \| ZSpeed \| Powertrix \| EVO-R \| Aeroworkz \| Nismo \| Z1 \| EcuTek \| Tuned by Seb @ SpecialtyZ

07-02-2020, 07:29 PM	#3 (permalink)
geeteezee Base Member Join Date: Jun 2019 Location: Ontario Posts: 191 Drives: 19 370z Heritage EAC Rep Power: 3361	I swapped over to Redline MT-85 yesterday, hoping to smooth out some shifting notchiness, (barely feels better) and thought my butt dyno detected a loss in power. Seemed fine today however. I didn't do the diff. BlackZMamba likes this. __________________

07-02-2020, 09:49 PM	#4 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,217 Drives: 2011 Nismo GM 6M Rep Power: 2684438	I didn't notice anything different when I switched to Redline in the tranny. Still grinds a little going from 6th to 5th. With the OS Giken diff. You have to use 80w-250 lube to keep it quite. That stuff is thick. BlackZMamba likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

07-03-2020, 10:48 AM	#5 (permalink)
bcrider Base Member Join Date: Apr 2016 Location: North Ga Posts: 8 Drives: Tacoma Rep Power: 9	Have the new fluids possibly reduced noise and vibration to the point the old butt dyno makes it feel more refined, possibly slower? SouthArk370Z and BlackZMamba like this.

07-07-2020, 11:15 AM	#6 (permalink)
Tractionless A True Z Fanatic Join Date: Jan 2016 Location: Atlantic SE Posts: 1,326 Drives: '10 K23 ST 7AT Rep Power: 30525	I assume the OP has a 6MT, if not and using Redline in 7AT may be an issue in comparison to OE fluid. BlackZMamba likes this. __________________ Toys Not Tots

07-09-2020, 08:11 PM	#9 (permalink)
theART Base Member Join Date: Feb 2009 Location: BC Posts: 163 Drives: To Drive Rep Power: 7822	nice tags! .ew sucks dementia joe's kok, .jar's a hermaphrodite, ew sux pearl white kok, jar has both a kok n pvssy! JARblue and BlackZMamba like this.

07-09-2020, 11:30 PM	#10 (permalink)
axmea? A True Z Fanatic Join Date: Apr 2012 Location: SoCal Posts: 6,236 Drives: WELL ZED PW 6MT Rep Power: 53241	I tried Nissan, Redline, Amsoil, and Motul. Nissan was fine and regressed badly when I switched to Redline and Amsoil. I was happiest when I used Motul. Nothing to do with torque and don't think it would affect that, it was more about how it felt and how smooth it was. BlackZMamba likes this. __________________ >MyZ's Album< NISMO Convert/ECUTEK/Takeda CAI/F.I. HFC NR CB Carbon/F.I. 34 Row Oil Cooler/4.08 Final Drive /Powertrix+Swifts/Hotchkis/SPL/Whiteline/TWM/Zoom Engineering/EVO-R/AeroJacket Vented CF Fenders + CF Spoiler/Avant Garde-WORK/NST/Morimoto Halo/STi Clear Lenses/Carbon Signal Automotive/RJM Performance/ZSpeed Clutch Flywheel CSC delete Last edited by axmea?; 07-09-2020 at 11:36 PM.

07-30-2020, 04:47 PM	#12 (permalink)
Zyonara91 Enthusiast Member Join Date: Jun 2016 Location: GTA Posts: 368 Drives: 2010-Red-6spd-S/T Rep Power: 15756	This is the thing. . . I had Nissan OEM fluid and swapped it out for MT85. It was terrible when cold, however once warmed up it was good. However I felt the car struggle a bit, gears were getting notchy when shifting at times. So I dumped the Redline, went back to Nissan OEM, never had an issue, cold or hot. I think I'll try Amsoil next for kicks. For the differential I used Redline. No issues with it whatsoever. I like using one brand across the board, I'm OCD like that. I think I'll go Amsoil in Diff as well next change. BlackZMamba likes this. __________________ 2FT3PDLZ

07-30-2020, 05:23 PM	#13 (permalink)
BlackZMamba Enthusiast Member Join Date: Oct 2012 Location: La Salle, IL Posts: 345 Drives: 2013 Z @ 321 whp Rep Power: 13	update - car is performing much better. However, the transmission fluid smells when i step on it a little. It's definitely a different smell than what I'm used to. __________________ Mods: ECUtek \| Stillen \| Fujimura \| BC Racing \| SPC \| Avant Garde \| Fast Intentions \| Z1 Motorsports \| Akebono \| Cooper \| Redline \| Motul \| Mobil 1

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