any experence on using a 75/80-140 trans oil? - Miata Turbo Forum - Boost cars, acquire cats.

Go Back  Miata Turbo Forum - Boost cars, acquire cats. > Performance & Tuning > Race Prep
Reload this Page >

any experence on using a 75/80-140 trans oil?

Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

any experence on using a 75/80-140 trans oil?

Old 10-25-2012, 10:29 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Feb 2012
Location: chicago
Posts: 691
Total Cats: -33
Default any experence on using a 75/80-140 trans oil?

I was considering trying this. once the car gets hot on track the shifting seems to get firmer.

I have the big parts to run a trans cooler but I have not had time to lay out the lines or even install the trans temp gauge but this will happen this winter.


so what would be the drawback of running a 80-140 in our trans? it should be fine right? just offer better protection when really hot? ive not taken the time to really research this but would not mind avoiding the packaging of a cooler.
then again no one seems to run a heavy oil so why?

I need to order some 75-140 for my rear diff so thought I might try it in the trans. but I would rather not kill a trans on an experiment

Last edited by psreynol; 10-26-2012 at 12:12 AM.
psreynol is offline  
Reply
Leave a poscat -1 Leave a negcat
Old 10-25-2012, 10:33 PM
  #2  
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,004
Total Cats: 1,815
Default

If it shifts crappy when hot, presumably you aren't using Amsoil MTG.

You should use Amsoil MTG.
__________________
Trackspeed Engineering
High-Performance Turbo Specialists - Sunnyvale, CA - 650-701-7223 - Email us!
Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
Savington is offline  
Old 10-26-2012, 12:12 AM
  #3  
Senior Member
Thread Starter
 
Join Date: Feb 2012
Location: chicago
Posts: 691
Total Cats: -33
Default

yes I am running the Amsoil based on the recommendations of this forum and in fact I'm a big shot dealer now because apparently Amsoil's marketing plan is to make buying the stuff as difficult as possible. I now run amsoil in the engine since I'm all out of the motul liquid gold and the amsoil is way cheaper once you reach the inner circle ;/


would using a 75/80-140 in the trans be a obvious bad idea? if so, can you tell me why this would be a bad idea? pretty sure I posted this before with limited results.

Last edited by psreynol; 10-26-2012 at 12:46 AM.
psreynol is offline  
Old 10-26-2012, 12:14 AM
  #4  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,078
Total Cats: 3,113
Default

I'd ask this question on the oil forums.
18psi is offline  
Old 10-26-2012, 12:49 AM
  #5  
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,004
Total Cats: 1,815
Default

You've got other issues if you're getting blocky shifting. Rover shifts the same, whether it's at the end of a 30 minute sprint race or a 4 hour enduro. Are you sure your clutch hydraulics are up to date?

Higher weight oils will drive temps up further.

Amsoil doesn't make a GL4 75/80-140w that I can see - what fluid are you considering?
__________________
Trackspeed Engineering
High-Performance Turbo Specialists - Sunnyvale, CA - 650-701-7223 - Email us!
Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
Savington is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
stoves
Suspension, Brakes, Drivetrain
5
04-21-2016 04:00 PM
Aroundcorner
Miata parts for sale/trade
2
10-01-2015 04:20 PM
Trent
WTB
2
10-01-2015 01:15 PM
JesseTheNoob
DIY Turbo Discussion
15
09-30-2015 03:44 PM


Thread Tools
Search this Thread
Quick Reply: any experence on using a 75/80-140 trans oil?


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.