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VR4ownzU
09-14-2006, 05:45 PM
I want to know the BEST tranny and rear fluid to use for a 98 GT. No BS or guessing. Proven fluids for a daily driven car that ISN'T raced.

thanks

shazapple
09-14-2006, 05:50 PM
Auto or manual?

Huffer
09-14-2006, 06:58 PM
Manual - he bought jakmobile's GT wagon.

Transmission - you can use Pennzoil Syncromesh (see LERSOC.com for some local hardcore autox opinions).

Rear diff, I've never used anything except off-the-shelf gear oil. It doesn't really matter back there unless you're running ridiculous power.

ivwarrior
09-14-2006, 09:23 PM
"Uncle Scotty's cocktail" for the 5MT.

1 qt Synchromesh
1 qt Redline Lightweight Shockproof
rest 75w90 Castrol HypoyC


Read diff..... I think about anything rated properly is fine.

Wiscon_Mark
09-14-2006, 10:29 PM
25% Redline Lightweight shockproof
75% Redline 75w90

Scotty's Cocktail is a good try as well. There is no absolute best, really. It all depends on what you're looking for, but any of the recommended would be better than whatever you have in there, most likely.

VR4ownzU
09-14-2006, 10:52 PM
I know DSM guys swear by synchromesh

Wiscon_Mark
09-14-2006, 10:53 PM
I know DSM guys swear by synchromesh

A lot of them like really l0ud! BOVs too. :lol:

Sorry, that's all I see around here. That and lancers with EVO wings, that definitely aren't evos...

VR4ownzU
09-14-2006, 11:27 PM
ya...a crushed DSM or HKS SSQ BOV are very loud. I've had both.

warrior
09-16-2006, 12:56 AM
ya...a crushed DSM or HKS SSQ BOV are very loud. I've had both.

I've got a 99 LGT and i put

1 qt red line shockproof lightweight
3 qt redlind 75w90 (or NS? I don't remember)

For the rear's, this guy is using red line shockproof heavy weight, I'm going to try that.. but for the tranny, that combo is amazing, no more grinds and butter shifting!

BAC5.2
10-10-2006, 08:46 AM
Don't use shockproof in the rear diff.

Use Motul 75W90 or some Mobil 1 75W90.

VR4ownzU
10-22-2006, 03:21 AM
I can't tell the difference between all the redlines! Can you guys be more specific on what you use. Thanks

ooberdoob
10-22-2006, 12:11 PM
i've got motul in both. i love it! $45 for damn gear oil, but it's worth it!

SHOfast
10-22-2006, 08:53 PM
I can't tell the difference between all the redlines! Can you guys be more specific on what you use. Thanks

The redline names can be confusing but the guys on here, like warrior just above, have the naming right.

I have seen some early wear on Subi 5 speeds that ran straight syncromesh, I think it is a little weak for these boxes, but it does a good job with the synchronizers.

xcntrk75
10-22-2006, 10:21 PM
75% Redline Lightweight shockproof
25% Synchromesh

^best combination for me thus far FOR THE TRANNY… The shockproof is very thick in comparison however completely curbs any high RPM shift grinds and does a fantastic job at lubing the syncros. If you have a front LSD you must run a lighter blend however.

warrior
10-23-2006, 07:42 AM
I can't tell the difference between all the redlines! Can you guys be more specific on what you use. Thanks

They are just Gear Oils that have different properties for different uses. Here's a better explanation

Redline 75W90 NS (There's also a 75W90 but our subie's take the NS which doesn't have the friction modifiers) - http://www.redlineoil.com/products_gear ... tegoryID=6 (http://www.redlineoil.com/products_gearlubricants.asp?productID=38&subCategoryID=15&categoryID=6)

Redline Shockproof Lightweight (A light gear oil, not as thick as the heavyweight stuff.) - http://www.redlineoil.com/products_gear ... tegoryID=6 (http://www.redlineoil.com/products_gearlubricants.asp?productID=43&subCategoryID=16&categoryID=6)

Redline Shockproof Heavyweight - http://www.redlineoil.com/products_gear ... tegoryID=6 (http://www.redlineoil.com/products_gearlubricants.asp?productID=44&subCategoryID=16&categoryID=6)\

Each link has a little decription of the red line product. Hopefully this clears any confusion you have

warrior
10-23-2006, 07:43 AM
Don't use shockproof in the rear diff.

Use Motul 75W90 or some Mobil 1 75W90.

..why?

Wiscon_Mark
10-23-2006, 09:07 AM
Because a differential doesn't need it, and it wouldn't help it?

VR4ownzU
11-12-2006, 10:39 AM
I've been reading post on LERSOC.com and seems like those guys swear by 3qts Redline MT-90 and 1qt Redline Heavyweight for the tranny. The Diff I'm still not sure about. Seems like you guys are big on the 3qts lightweight and 1qt Sycromesh. I want to use whatever is best tested for my 98 GT tranny! Most of those guys are WRX guys on that board. I wish I could decide!

Huffer
11-12-2006, 05:42 PM
The LERSOC guys are pushing more HP on their drivetrains. So you'd be well protected if you used their combo.