Tranny grinding after redline MT90 GL4 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

SR2oD3T · 01-27-2009, 09:35 PM

my car: s13 with redtop SR20DET
i have done the research and i know that sr20 5 speed uses GL4. also everyone prefer redline MT90 75w-90. therefore, when i m changing my diff fluid, i bought my redline MT90 75w 90 GL4. put it in, and now its much harder to shift!!!! what the hell is going on? it almost like not pressing the clutch far enough. so i adjusted the pedal, didnt work. now i have to wait a little between shift. if i shift too fast, it will grind sometimes.
i bought the car with the SR swap and it was shifting smoothly. didnt know what fluid it was.
now i m stuck. i dont no what to do because i already put the right fluid.

ALSO, i have done a clutch job on my friend's smooth shifting KA recently and put GL4/GL5 capable oil after. it did the same as my SR. hard shifting and if force it to shift fast, grind.
PLEASE HELP! i m scared to change tranny fluid now.
thanks.

KELvin

initial_drifter · 01-27-2009, 09:52 PM

are you sure you put in the correct amount?

Dousan_PG · 01-27-2009, 09:56 PM

yeah
ive used MT90 for YEARS (at least 6 years) on KA and Sr trannies w/ no issues
check your fluid levels

slider2828 · 01-27-2009, 09:56 PM

it should be 2.5 bottles...

nismo240sxdrifter · 01-27-2009, 11:11 PM

^
2.5 bottles is what it supposed to be like he said, you could also try penzoil synchromesh, it is way cheaper then royal purple and takes away 3rd gear grind in KA tranny's, it works wonders

JRas · 01-28-2009, 12:10 AM

this is what I use, it may be a little scratchy cold but when warmed up.. works very well IMO

bl3ujay07 · 01-28-2009, 01:03 AM

im in the same boat you are in. Will be changing mines when i get my check this weekend. Royal purple synchro mesh. hopefully it will get better.

SR2oD3T · 01-28-2009, 01:40 AM

Quote:

Originally Posted by JRas

this is what I use, it may be a little scratchy cold but when warmed up.. works very well IMO

yup! i seem to get better after running a while. problem appears in cold driving.
i put almost 3 bottle/3 qt. and the car was level with 4 stands so can make sure it has enough fluid.
will it be master or slave cylinder related?
thanks.

KELvin

MrChow · 01-28-2009, 01:56 AM

Quote:

Originally Posted by SR2oD3T

yup! i seem to get better after running a while. problem appears in cold driving.
i put almost 3 bottle/3 qt. and the car was level with 4 stands so can make sure it has enough fluid.
will it be master or slave cylinder related?
thanks.

KELvin

Quote:

Originally Posted by slider2828

it should be 2.5 bottles...

Did you read??
2.5 bottles/qts.over filling isn't a good idea.

How cold is i where you live??

zugoi · 01-28-2009, 02:24 AM

cant really over fill it. If you do the fluid just pours out. Which is when you know you got enough.

joe3180 · 07-11-2009, 03:11 AM

can over fill it if you fill from the shifter

gsxr141 · 07-11-2009, 05:16 AM

what effects will overfilling it have?

devnull · 07-11-2009, 06:49 AM

It probably won't cause any actual damage. There's a chance it could cause a leak out of the input shaft seal or the tail seal.

It might make shifting slightly heavier.

VNG704 · 07-11-2009, 08:21 AM

dunno if it matters but yes the tranny uses gl4 while the diff uses gl5 oils.

S-Nation S13 · 07-11-2009, 09:13 AM

yup yup 2.5 and your good i use redline mt90 but im lookin in to synchromesh still have a grind gettin into 3 at high rpms but no biggie

flip3d · 07-11-2009, 09:31 AM

Did the OP say he put it in his diff?

VNG704 · 07-11-2009, 09:41 PM

Quote:

Originally Posted by SR2oD3T

my car: s13 with redtop SR20DET
i have done the research and i know that sr20 5 speed uses GL4. also everyone prefer redline MT90 75w-90. therefore, when i m changing my diff fluid, i bought my redline MT90 75w 90 GL4. put it in, and now its much harder to shift!!!! what the hell is going on? it almost like not pressing the clutch far enough. so i adjusted the pedal, didnt work. now i have to wait a little between shift. if i shift too fast, it will grind sometimes.
i bought the car with the SR swap and it was shifting smoothly. didnt know what fluid it was.
now i m stuck. i dont no what to do because i already put the right fluid.

ALSO, i have done a clutch job on my friend's smooth shifting KA recently and put GL4/GL5 capable oil after. it did the same as my SR. hard shifting and if force it to shift fast, grind.
PLEASE HELP! i m scared to change tranny fluid now.
thanks.

KELvin

Confusing... but is the OP talking about his transmission or the diff? Reposted info but 2.5qt 75w90 gl4 for trans and 2qt 80w90 gl5 for diff carrier. Oh and not everyone prefers redline.

98s14inaz · 07-12-2009, 03:27 PM

I had a similar experience with redline mt90 so I went with redline MTL and my trans shifts like butter.

weissguy · 07-13-2009, 08:44 PM

Over fill = fluid blowing through the vent tube on the trans.

teamkunimitsu · 07-15-2009, 01:35 AM

hey guys just as weissguy said even if is overfilled it will just blow out the vent tube on the top, and possible front or rear tail seal. Overfilling is is ok as you will possibly have heavy shifting and wont damage the trans but end up with gear oil on the floor as it is thick and sticky and you dont want to clean that trust me.
Now there is a couple of possibilities where the clutch is starting to get worn your trans will have a hard time shifting. This is a fact when these clutches get worn with stock clutches trans will get harder to shift as it wears then goes to slipping as it gets worse.
second is where you live and what type of gear oil you are using. normal cali temps are usually warm and 80/90 would be typically what most use on these trannies. Check with fsm with temps and what to use.
third thing it could be is MOST OF US now im not saying everybody but most tend to quick shift hardshift etc into gears.
I know blah blah shud up and get to point. lol
just keep reading. Inside of the tranny is whats called syncronizers. what they do is when you start changing gears it touches the next gear to bring it up to speed with the previous gear so the gears can mesh, instead of just a spinning gear touching a non spinning gear which would cause what?? cmon take a guess yes grind
Well syncros (short term word) tend to get worn down as they get used and abused depending on the person abusing it. cmon everybody loves to quickshift. lol
Now everybody knows synthetic is a special lube that everybody loves to use lol and know what synthetics are. if you dont look it up as you are outdated.
put worn syncros and synthetics together what happens SLIP! syncros cant get the next gear up to speed fast enough and GRIND!. i hope you arnt tired of reading.

NOOW IM NOT SAYING YOUR TRANS IS FUCKED!! READ FURTHER

you can try out different types of fluid as different companies have differend formulas. and also if you like the brand you are using try a different weights of oil as they have different heat ranges. Most will notice that shifting gets better as car warms up. but try different brands and weights. trust me it will work. workking at a trans shop for years.... i hated doing clutches with all the burnt clutch dust.... so try it out. if anything needs to be corrected just correct me if im wrong. im willing to learn too.

slider2828 · 07-15-2009, 06:42 PM

There is a review that has over 6 pages of tranny oil reviews by people in on this forum. MT90 sucks shit.. and so does Shockproof.... search

Om1kron · 07-15-2009, 08:58 PM

amsoil 75-90 GL4... done and done.

kevmeistah21 · 07-16-2009, 03:59 AM

i recently put redline mt-90 and i can't shift into 1st gear at all on cold starts.. pain in the ass, im gonna drain it and try something else..

slider2828 · 07-16-2009, 09:34 AM

Do people even read posts?

01-27-2009, 09:35 PM	#1
SR2oD3T Zilvia Member Join Date: Jun 2006 Location: fremont Posts: 181 Trader Rating: (6) Feedback Score: 6 reviews	Tranny grinding after redline MT90 GL4 my car: s13 with redtop SR20DET i have done the research and i know that sr20 5 speed uses GL4. also everyone prefer redline MT90 75w-90. therefore, when i m changing my diff fluid, i bought my redline MT90 75w 90 GL4. put it in, and now its much harder to shift!!!! what the hell is going on? it almost like not pressing the clutch far enough. so i adjusted the pedal, didnt work. now i have to wait a little between shift. if i shift too fast, it will grind sometimes. i bought the car with the SR swap and it was shifting smoothly. didnt know what fluid it was. now i m stuck. i dont no what to do because i already put the right fluid. ALSO, i have done a clutch job on my friend's smooth shifting KA recently and put GL4/GL5 capable oil after. it did the same as my SR. hard shifting and if force it to shift fast, grind. PLEASE HELP! i m scared to change tranny fluid now. thanks. KELvin

01-27-2009, 09:56 PM	#3
Dousan_PG Post Whore! Join Date: May 2002 Location: Orange County, California Age: 46 Posts: 16,640 Trader Rating: (23) Rides Gallery: Dousan_PG Feedback Score: 23 reviews	yeah ive used MT90 for YEARS (at least 6 years) on KA and Sr trannies w/ no issues check your fluid levels __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira

01-27-2009, 09:56 PM	#4
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	it should be 2.5 bottles... __________________ Turn and Burn!

01-28-2009, 12:10 AM	#6
JRas Zilvia FREAK! Join Date: Jul 2007 Location: Arizona Age: 36 Posts: 1,503 Trader Rating: (2) Feedback Score: 2 reviews	this is what I use, it may be a little scratchy cold but when warmed up.. works very well IMO __________________

01-28-2009, 02:24 AM	#10
zugoi Zilvia Junkie Join Date: Aug 2003 Location: Bay area Posts: 560 Trader Rating: (0) Feedback Score: 0 reviews	cant really over fill it. If you do the fluid just pours out. Which is when you know you got enough. __________________ Drunk posting FTW!

01-27-2009, 09:52 PM	#2
initial_drifter Zilvia Junkie Join Date: Nov 2005 Location: Mill Creek Posts: 380 Trader Rating: (1) Feedback Score: 1 reviews	are you sure you put in the correct amount?

01-27-2009, 11:11 PM	#5
nismo240sxdrifter Zilvia Junkie Join Date: Jan 2008 Location: Deep south Posts: 443 Trader Rating: (12) Feedback Score: 12 reviews	^ 2.5 bottles is what it supposed to be like he said, you could also try penzoil synchromesh, it is way cheaper then royal purple and takes away 3rd gear grind in KA tranny's, it works wonders

01-28-2009, 01:03 AM	#7
bl3ujay07 Zilvia Addict Join Date: Feb 2008 Location: norcal(209) and socal(805) Posts: 691 Trader Rating: (6) Feedback Score: 6 reviews	im in the same boat you are in. Will be changing mines when i get my check this weekend. Royal purple synchro mesh. hopefully it will get better.

07-11-2009, 03:11 AM	#11
joe3180 Zilvia Junkie Join Date: Aug 2005 Location: 909 california Posts: 356 Trader Rating: (11) Feedback Score: 11 reviews	can over fill it if you fill from the shifter

07-11-2009, 05:16 AM	#12
gsxr141 Zilvia Junkie Join Date: May 2008 Location: rochester Posts: 327 Trader Rating: (3) Feedback Score: 3 reviews	what effects will overfilling it have?

07-11-2009, 06:49 AM	#13
devnull Zilvia Member Join Date: Aug 2006 Location: Earth Posts: 222 Trader Rating: (0) Feedback Score: 0 reviews	It probably won't cause any actual damage. There's a chance it could cause a leak out of the input shaft seal or the tail seal. It might make shifting slightly heavier.

07-11-2009, 08:21 AM	#14
VNG704 Zilvia FREAK! Join Date: Dec 2008 Location: Wisconsin Posts: 1,575 Trader Rating: (17) Feedback Score: 17 reviews	dunno if it matters but yes the tranny uses gl4 while the diff uses gl5 oils.

07-11-2009, 09:13 AM	#15
S-Nation S13 Post Whore! Join Date: Jan 2008 Location: LAND of the LOST Posts: 4,083 Trader Rating: (92) Feedback Score: 92 reviews	yup yup 2.5 and your good i use redline mt90 but im lookin in to synchromesh still have a grind gettin into 3 at high rpms but no biggie

07-11-2009, 09:31 AM	#16
flip3d Zilvia FREAK! Join Date: Feb 2008 Location: Ft Lauderdale, FL Age: 37 Posts: 1,473 Trader Rating: (1) Feedback Score: 1 reviews	Did the OP say he put it in his diff? __________________

07-12-2009, 03:27 PM	#18
98s14inaz Zilvia FREAK! Join Date: Feb 2003 Location: Nonya Posts: 1,367 Trader Rating: (1) Feedback Score: 1 reviews	I had a similar experience with redline mt90 so I went with redline MTL and my trans shifts like butter. __________________ -Retired

07-13-2009, 08:44 PM	#19
weissguy Zilvia Junkie Join Date: Feb 2007 Location: dallas Posts: 301 Trader Rating: (0) Feedback Score: 0 reviews	Over fill = fluid blowing through the vent tube on the trans.

07-15-2009, 01:35 AM	#20
teamkunimitsu Leaky Injector Join Date: Feb 2009 Location: orange county Age: 38 Posts: 115 Trader Rating: (4) Feedback Score: 4 reviews	hey guys just as weissguy said even if is overfilled it will just blow out the vent tube on the top, and possible front or rear tail seal. Overfilling is is ok as you will possibly have heavy shifting and wont damage the trans but end up with gear oil on the floor as it is thick and sticky and you dont want to clean that trust me. Now there is a couple of possibilities where the clutch is starting to get worn your trans will have a hard time shifting. This is a fact when these clutches get worn with stock clutches trans will get harder to shift as it wears then goes to slipping as it gets worse. second is where you live and what type of gear oil you are using. normal cali temps are usually warm and 80/90 would be typically what most use on these trannies. Check with fsm with temps and what to use. third thing it could be is MOST OF US now im not saying everybody but most tend to quick shift hardshift etc into gears. I know blah blah shud up and get to point. lol just keep reading. Inside of the tranny is whats called syncronizers. what they do is when you start changing gears it touches the next gear to bring it up to speed with the previous gear so the gears can mesh, instead of just a spinning gear touching a non spinning gear which would cause what?? cmon take a guess yes grind Well syncros (short term word) tend to get worn down as they get used and abused depending on the person abusing it. cmon everybody loves to quickshift. lol Now everybody knows synthetic is a special lube that everybody loves to use lol and know what synthetics are. if you dont look it up as you are outdated. put worn syncros and synthetics together what happens SLIP! syncros cant get the next gear up to speed fast enough and GRIND!. i hope you arnt tired of reading. NOOW IM NOT SAYING YOUR TRANS IS FUCKED!! READ FURTHER you can try out different types of fluid as different companies have differend formulas. and also if you like the brand you are using try a different weights of oil as they have different heat ranges. Most will notice that shifting gets better as car warms up. but try different brands and weights. trust me it will work. workking at a trans shop for years.... i hated doing clutches with all the burnt clutch dust.... so try it out. if anything needs to be corrected just correct me if im wrong. im willing to learn too.

07-15-2009, 06:42 PM	#21
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	There is a review that has over 6 pages of tranny oil reviews by people in on this forum. MT90 sucks shit.. and so does Shockproof.... search __________________ Turn and Burn!

07-15-2009, 08:58 PM	#22
Om1kron Post Whore! Join Date: Sep 2004 Location: Granada Hills, CA Age: 44 Posts: 6,992 Trader Rating: (15) Feedback Score: 15 reviews	amsoil 75-90 GL4... done and done. __________________ Wayne Edwards https://om1kron.blogspot.com

07-16-2009, 03:59 AM	#23
kevmeistah21 Post Whore! Join Date: Dec 2007 Location: Pasadena, CA Age: 34 Posts: 2,658 Trader Rating: (68) Feedback Score: 68 reviews	i recently put redline mt-90 and i can't shift into 1st gear at all on cold starts.. pain in the ass, im gonna drain it and try something else.. __________________ Late Night Crew... #02 <3 Bought anything from me? Please leave me a review! http://zilvia.net/f/private-sellers/...meistah21.html

07-16-2009, 09:34 AM	#24
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Do people even read posts? __________________ Turn and Burn!