Best fluid for my 6 speed - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 04-12-2010, 11:38 AM   #21
Junior Member
 
Join Date: Dec 2008
Posts: 55
Total Cats: 0
Default

How did you like the Ford stuff?

Emilio, any more thoughts on the MTG 75-90 Syncromesh now that you've been running it for a while?

Thanks

Tim
timg is offline   Reply With Quote
Old 04-12-2010, 12:20 PM   #22
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by timg View Post
How did you like the Ford stuff?

Emilio, any more thoughts on the MTG 75-90 Syncromesh now that you've been running it for a while?

Thanks

Tim
I still like it and I'm buying more and getting an analysis completed.
hustler is offline   Reply With Quote
Old 04-12-2010, 12:22 PM   #23
Elite Member
iTrader: (8)
 
Join Date: Jun 2009
Location: Albany, NY
Posts: 1,523
Total Cats: 4
Default

Quote:
Originally Posted by hustler View Post
I still like it and I'm buying more and getting an analysis completed.
Still using the GM modifier? Are you guys getting it at a major parts store, or ordering?
webby459 is offline   Reply With Quote
Old 04-12-2010, 12:42 PM   #24
Junior Member
 
Join Date: Dec 2008
Posts: 55
Total Cats: 0
Default

Don't hate me.. but I'm also wondering how these experiance should relate to a 5 speed. Guessing should have similar success.

Hustler, I thought you were running Amsoil 75-90 w/ 2oz of friction modifier (not the 'syncromesh' Amsoil 75-90)?

Tim
timg is offline   Reply With Quote
Old 04-12-2010, 01:09 PM   #25
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by webby459 View Post
Still using the GM modifier? Are you guys getting it at a major parts store, or ordering?
Only using the gear oil with no additional additives.
hustler is offline   Reply With Quote
Old 05-13-2010, 03:31 AM   #26
Junior Member
iTrader: (18)
 
Join Date: Aug 2006
Location: Temple City, Ca
Posts: 305
Total Cats: 0
Default

I ordered motorcraft fluids for my 6 speed, but i think they gave me the wrong one. can someone verify for me. the one i got says SAE 75W-90 Synthetic Axle Lubricant.

thanks

same one on this site.

http://www.alibaba.com/product-free/...showimage.html
Hi Im Simon is offline   Reply With Quote
Old 05-13-2010, 04:13 AM   #27
Senior Member
iTrader: (1)
 
Join Date: Jul 2009
Location: Batavia, IL
Posts: 604
Total Cats: 0
Default

heh yeah that's the wrong stuff. That goes in your differential. It should look like this: http://focus.c-f-m.com/motorcraftful...?dc=googlefeed

I've used this stuff for 20,000mi/2 years in my 5-speed. Never have tried any other fluid, but loved the buttery feel this had (compared to the stock fluid). I recently changed the motorcraft out during an engine swap for some generic GL4 GEAR OIL from napa. I guess it feels the same.
Cococarbine3 is offline   Reply With Quote
Old 05-13-2010, 04:15 AM   #28
Junior Member
iTrader: (18)
 
Join Date: Aug 2006
Location: Temple City, Ca
Posts: 305
Total Cats: 0
Default

oh okay. thanks for the info.
Hi Im Simon is offline   Reply With Quote
Old 05-13-2010, 06:21 AM   #29
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,371
Total Cats: 1,332
Default

Quote:
Originally Posted by hustler View Post
I have amsoil 75-90 MTG and need to add the GM friction modifier because it still shifts like ****, but better than most 6-speeds. Replace it often if you track the car.

Just make sure you use a GL-4 and let us know what you find.
I use the same stuff, 75w90 MTG with the GM modifier. That and the 949 twindisc let me shift as fast as I am comfortable with.
Savington is offline   Reply With Quote
Old 05-13-2010, 09:25 AM   #30
Miotta FTW!
iTrader: (24)
 
Splitime's Avatar
 
Join Date: Jun 2006
Location: Chicagoland, IL
Posts: 4,295
Total Cats: 26
Default

I'm surprised I don't see any chatter about GM synchromesh with friction modifier. It was the ticket for less than smooth transmissions on honda boxes.... And i swear I've seen it mentioned on the miata boards.
Splitime is online now   Reply With Quote
Old 05-13-2010, 10:04 AM   #31
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by Splitime View Post
I'm surprised I don't see any chatter about GM synchromesh with friction modifier. It was the ticket for less than smooth transmissions on honda boxes.... And i swear I've seen it mentioned on the miata boards.
I'd use that but...
GM and Penzoil synchromesh 100*C cSt = 9.08
Motul 300 gear oil 100*cSt = 11.0 (and its crappy GL-5 which eats synchronizers)
Amsoil MTG 100*C cSt = 14.7

Redline MT-90 scores 14.6cSt at 100*C but for some reason the Amsoil feels "thicker" which I prefer. Its pretty clear that either MT-90 or MTG are the gear oils to go with for the track crew. I don't' know anything about using the friction modifier so I can't comment on that due to ignorance.

All the GL-5 gear oils are not for transmissions, they're for rear ends. After looking at my buddy's shiny golden gear oil come out the drain I made him switch to MTG with his ATF/gear oil concoction the Quaife guys run...which I'm not sold on but also uneducated considering I'm not an engineer.
hustler is offline   Reply With Quote
Old 05-13-2010, 10:08 AM   #32
Elite Member
 
Join Date: Dec 2008
Location: Colorado
Posts: 1,669
Total Cats: 36
Default

I am utterly shocked at how clean this thread has been with regard to lubricants and the compairison thereof.
Sparetire is offline   Reply With Quote
Old 05-13-2010, 10:09 AM   #33
Murderator
Thread Starter
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,199
Total Cats: 2,584
Default

Still on the motorcraft here and still fairly happy with it.
18psi is offline   Reply With Quote
Old 05-13-2010, 01:38 PM   #34
Elite Member
iTrader: (15)
 
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,889
Total Cats: 28
Default

Put motorcraft in mine, no testing yet, still need to finish the motor installation. All I can report is that the transmission has not melted.
ZX-Tex is offline   Reply With Quote
Old 05-13-2010, 01:41 PM   #35
Elite Member
iTrader: (8)
 
Join Date: Jun 2009
Location: Albany, NY
Posts: 1,523
Total Cats: 4
Default

Quote:
Originally Posted by hustler View Post
All the GL-5 gear oils are not for transmissions, they're for rear ends.
I had GL5 RP synth in my 5 speed for a couple of weeks/about 40 miles. Terrible. If the car ever goes back together I have Amsoil MTG waiting to be put in. You could hear the syncros suffering with the GL5.
webby459 is offline   Reply With Quote
Old 05-13-2010, 03:10 PM   #36
Elite Member
iTrader: (11)
 
Join Date: Feb 2009
Posts: 2,982
Total Cats: 10
Default

I just put in the "liquid gold" motorcraft stuff. FORD is very proud of this liquid. It worked great in my 5 speed, so I put it in the 6 speed.
miatauser884 is offline   Reply With Quote
Old 05-13-2010, 06:13 PM   #37
Elite Member
iTrader: (15)
 
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,889
Total Cats: 28
Default

Quote:
Originally Posted by webby459 View Post
I had GL5 RP synth in my 5 speed for a couple of weeks/about 40 miles. Terrible.
FWIW same thing here. I had RP Synth in my 5-speed and did not like it at all. It came out after about a month or so.
ZX-Tex is offline   Reply With Quote
Old 05-14-2010, 10:40 AM   #38
Senior Member
 
Join Date: Aug 2009
Location: Long Island, NY
Posts: 576
Total Cats: 0
Default

I run the ford stuff for auto x, track and street works great
02semiata is offline   Reply With Quote
Old 05-14-2010, 11:30 AM   #39
Senior Member
iTrader: (14)
 
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,488
Total Cats: 0
Default

Quote:
Originally Posted by Sparetire View Post
I am utterly shocked at how clean this thread has been with regard to lubricants and the compairison thereof.
You could milk hustler's *****, and use the semen in your trans. It should have enough viscosity for smooth syncro engagement and it's all natural so it should reduce syncro wear.

There...happy now?
lordrigamus is offline   Reply With Quote
Old 05-14-2010, 11:59 AM   #40
Junior Member
 
Join Date: Dec 2009
Location: ON, Canada
Posts: 106
Total Cats: 2
Default

I am currently running the Ford Motorcraft fluid and to be all honest I can't tell the difference between it and the previous Redline tranny fluid I was running. Could be just my transmission but the 1-2 shift has always been pretty mechanical. I have noticed that the feeling of smoothness is more related to when you shift (no low rpm BS) than the fluid used.
Staffah is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1994 Spec Miata Race Car SM/SM2/SSM For Sale Quinn Cars for sale/trade 6 10-23-2016 08:58 AM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 PM
Got bad Crank Angle Sensor and Random Misfire codes, but runs fine. Greasyman General Miata Chat 2 09-28-2015 11:44 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:48 PM.