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View Poll Results: Redline 75W90NS in your 5sp WRX tranny? Check all that apply
Shifts better than the original fluid 31 62.00%
Shifts worse than the original fluid 4 8.00%
Tranny grinds more than with the original fluid 12 24.00%
Tranny grinds less than with the original fluid 3 6.00%
Voters: 50. You may not vote on this poll

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Old 02-06-2003, 04:17 PM   #1
Tshulthise
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Default Poll: What is your experience with Redline 75W90NS in your 5sp WRX?

1. Better than the OEM fluid
2. Worse than the OEM fluid
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Old 02-06-2003, 06:30 PM   #2
GLwagon
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I have had it in for the past 4-5k miles...
It is as smooth as the stock fluid & a hair quicker.
I don't slam through the gears & have never gotten a grind.
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Old 02-06-2003, 11:14 PM   #3
BillJC
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Just as was said before, if you don't slam the gears, then your shifts will be smoohter and faster. I've had it in my car for 2000 miles now and I love it. No grinds just smooth, fast shifts.
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Old 02-07-2003, 11:23 AM   #4
Tshulthise
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Quote:
Originally posted by BillJC
Just as was said before, if you don't slam the gears, then your shifts will be smoohter and faster. I've had it in my car for 2000 miles now and I love it. No grinds just smooth, fast shifts.
There are many WRX trannys that have a synchro problem that causes grinding going from second to first gear if you are moving over 5mph and if you don't rev match your shift. If you check the warranty thread you will see that there are several trannys with synchro problems in other gears even though the tranny was babied. I'm hoping to get an objective concensus with this poll to see if the Redline oil without friction modifier (means more friction) helps or hurts these problems. Thanks for the votes so far!
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Old 02-07-2003, 07:55 PM   #5
DanBelford
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I put the 75w90ns in the tranny and its better than it was before. My 2003WRX has 15,000km on it. It didnít improve shifting into first. I think these cars just have finicky transmissions and you have to rev match and double clutch. Just practice eventually you will get very good at this fine art and you will love it.
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Old 02-08-2003, 09:13 AM   #6
ScreaminFast
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I had redline MT90 in my maxima, and I was considering putting redline in my scooby because I was so happy with the maxima. However, I have read so many problems associated with this over the last few months. How long have you guys had your 75W90NS in there?
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Old 02-08-2003, 10:09 AM   #7
GLwagon
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I have read at least 20+ people that say that they CAN'T get first gear above 5mph...
The faster the drive line is rotating, the more the synchros have to work at equalizing the gear speeds.
At 5mph it takes only a split second to get into first...
At 10-15mph it is more like a second or two using firm pressure & NOT jaming it into gear.
If you turn off the radio & heater, let the engine idle while coasting at 15mph & gently put it in to 1st you can hear the gears coming to speed before it will go in...
Taking a set of gears from hardly turning to 3-4krpm is not an instant process...
If using a smooth firm pressure on the shifter yelds a grind every time there may be a problem assuming that there IS gear oil in the gear box.
Double clutching into first helps to greatly reduce wear on the synchros & is easy to do...
On an ice cold WRX (0* F) I can't touch 1st untill stopped or I double clutch it... Once the gear box has warmed up, it is smoooth. Not fast compaired to a German made box but it works...

Last edited by GLwagon; 02-08-2003 at 10:20 AM.
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Old 02-08-2003, 05:26 PM   #8
wavshrdr
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I just went with the Redlline MT90 instead of the 75/90NS as I wanted to help the synchros. It is much easier to get first gear even when cold (-2F). It is now not mandatory to double clutch doing into second gear when the tranny is cold as in below (+10F) ambient temps.

I went outside today and the garage was +8F and the tranny shifted like it thought it was +30F which is to say it was almost tolerable. I can actually engage first gear while rolling without a lot of trouble. The NS actually makes it harder for the synchros as it is more slippery sort of like using Amsoil.

I may try using the "Shockproof" this summer to see how it is when driving the car more agressively. At this point I am happy with the MT90 and I am glad I didn't go with the 75/90NS. Unfortunately I will have to wait to see how it does in warmer weather but for this extremely cold snap I am pretty happy. Our low tonight is expected to be -10F!!!!! Yesterday it was -14F here. I really noticed the difference then. Even my wife remarked how much easier the car was to shift AND quiter too. It doesn't have such pronounced incessant gear whine.

-Tim

Quote:
Originally posted by ScreaminFast
I had redline MT90 in my maxima, and I was considering putting redline in my scooby because I was so happy with the maxima. However, I have read so many problems associated with this over the last few months. How long have you guys had your 75W90NS in there?
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Old 02-13-2003, 10:17 AM   #9
Tshulthise
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Bump
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Old 02-14-2003, 08:03 AM   #10
subarurabbit
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I've had it in for 15k miles. No issues - except I do do the double clutch for 1st gear...
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Old 02-14-2003, 08:36 AM   #11
Orson
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Quote:
Originally posted by wavshrdr
I just went with the Redlline MT90 instead of the 75/90NS as I wanted to help the synchros.
The only problem with MT90 is that it is a GL-4 gear oil and Subaru calls for a GL-5 gear oil. Too bad - I had great results with MTL in a Saab and a Volvo.


I just had my dealer change out the factory stuff. They use Mobil 1 synthetic gear oil from the grey drum. From what I have read here, this is *different* from the synthetic gear oil you get from Autozone/Pepboys. The grey drum stuff is not super slick like the retail stuff. Shifting is very slightly better, but not worth the trouble in my opinion.
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Old 02-14-2003, 04:11 PM   #12
Jaxx
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big thumbs down on 7590ns

i bad enough that i am going to take it out
and put mt90 in like i had in my RS

initally it shifted faster .. now it grinds so bad that the net effect is a slower shift
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Old 02-14-2003, 04:45 PM   #13
nicktckhoo
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I think rev matching is the key to shifting into first. Dopuble clutching is fine but From what I heard not necessary on modern traANSmissions. Rev matching helps though and I always do it before downshifting.

Nick
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Old 02-17-2003, 11:26 AM   #14
gpd323
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I am on my second tranny oil change using Redlines 75-90WT NS.
I have 32K miles on the WRX. Mine shifts just fine and just a wee bit better when cold then the OEM fluid but I have always had the 1st gear issue since it was new and the NS does nothing to help getting into 1st at any speed over a crawl.
I have not experienced any negatives like grinding or noises etc...
Greg Downing
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Old 02-17-2003, 04:37 PM   #15
Tshulthise
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Quote:
Originally posted by nicktckhoo
I think rev matching is the key to shifting into first. Dopuble clutching is fine but From what I heard not necessary on modern traANSmissions. Rev matching helps though and I always do it before downshifting. Nick
Nick... you have to double clutch to rev match. Otherwise rev matching doesn't rev match.
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Old 02-18-2003, 06:43 PM   #16
Casperwrx
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I was another that put first of all castrol syn. within an hour --grind into 1st at 5mph---Read alot of threads --redline75/90ns--Grind-grind etc....read alot more-went back to OEM--after 1 hour going 15 mph slight push--went in and heard that wind--HAPPY
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Old 03-11-2003, 09:40 AM   #17
kenshiro
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Quote:
Originally posted by wavshrdr

I may try using the "Shockproof" this summer to see how it is when driving the car more agressively.

-Tim
Can you tell me more about this "Shockproof" stuff?
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Old 03-11-2003, 10:23 PM   #18
cmaj7
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Default 2nd to 1st

Don't forget the WRX has very tall ratios between 2nd and 1st, it will always be difficult to shift from 2nd > 1st. This is a function of how much the drive train must slow down to allow the shift to happen. Double clutching, not just rev matching, will help and probably prolong the life of your tranny.
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Old 04-06-2003, 06:38 PM   #19
Ken Levin
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With the redline NS, although the lever could move more quickly between gears, the synchros were not meshing as easily. When I switched back to petroleum-based trans fluid, all was well again.

edit: I still use Redline products in the rear diff and in the engine.

Last edited by Ken Levin; 04-06-2003 at 11:17 PM.
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Old 04-06-2003, 08:51 PM   #20
totoherbs
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Redline is a good oil... its not the best. If your willing to spend the money get some motul or even better neo

http://bakerprecision.com/neooil.htm


Quote:
Nick... you have to double clutch to rev match. Otherwise rev matching doesn't rev match.
realy? ya know I always find it goes into gear easyer when I dont double clutch and just rev match.... Ill have to start trying the with the dobble clutching. so it would go... push in clutch, put it in N, let go of the clutch, rev match, put in clutch and go into gear.... right?

hmmm I think I was doing it right according to this

http://forums.nasioc.com/forums/show...l&pagenumber=3

Last edited by totoherbs; 04-06-2003 at 09:04 PM.
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Old 04-06-2003, 10:59 PM   #21
cmaj7
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Default Um actually!!!

Quote:
Originally posted by totoherbs
Redline is a good oil... its not the best. If your willing to spend the money get some motul or even better neo

http://bakerprecision.com/neooil.htm




realy? ya know I always find it goes into gear easyer when I dont double clutch and just rev match.... Ill have to start trying the with the dobble clutching. so it would go... push in clutch, put it in N, let go of the clutch, rev match, put in clutch and go into gear.... right?

hmmm I think I was doing it right according to this

http://forums.nasioc.com/forums/show...l&pagenumber=3
Just so ya know!!

NEO uses a diester base stock, this is the same as Royal Purple and Amsoil. Very very good, but not the best.

The best synthetics use polyol ester base stock.

To my knowledge, there are only two companies which use polyol esters. Redline and Motul.

Most other synthetics like Mobil 1 use a blend of base stocks and are also good, but not nearly as good as diester or polyol ester.
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Old 04-07-2003, 10:38 AM   #22
Tshulthise
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Redline may have a higher quality base but it definately was a disaster in my car. It made the tranny VERY noisy and shifting was much slower and notchier. I switched to Neo RHD and the noise is gone and shifting is similar to stock now. First gear still grinds but I can actually hear the syncro spinning up sometimes now. I don't doubt Redline is a good oil but it was terrible in my tranny.
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Old 06-04-2003, 12:58 AM   #23
MAD REX
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All shifts seem smoother except 2nd to 1st.

Before switching to Redline I could shift into first at 20mph. Now sometimes it grinds even at a stop.

Just made the switch last weekend
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Old 06-04-2003, 01:33 AM   #24
Ken Levin
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I had identical experience as MadRex. Synchros and gears seem to spin more freely, but engagement is compromised. I replaced Redline trans oil with traditional based product and shifting pretty much returned to "normal". I still use Redline (10W30) in the engine however.

Happy Motoring
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Old 06-07-2003, 09:44 PM   #25
sajohnson
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Unhappy Can't See Poll Results

I don't recall this being the case with other polls, but this one seems to require that you vote before you can see the current results.

I am very interested in this topic, but I haven't changed my tranny fluid yet and I don't want to "vote" without knowing just to see the results.

HELP!
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