manual trans fluid - Troubleshooting - VWDiesel.net The IDI, TDI, and mTDI source.

• manual trans fluid by danwithagolf on 17 Oct, 2008 12:14
• i know that the vw trans use the 75w 90 syn GL-4  but can you use the same but GL-5? my work has GL-5 if not im having a hard time finding the GL-4
• #1 by saurkraut on 17 Oct, 2008 13:31
• GL5 is not the right oil.  It designed to work in differentials, and has stuff that will eat the brass syncro rings in your gear box.
  
  You need GL4
  
  There are others out there but you could try Redline MTL: http://www.redlineoil.com/products_gearlubricants.asp?categoryID=7
  
  
  
  
  
  or go to a VW dealer and by their manual transmission oil.
• #2 by danwithagolf on 17 Oct, 2008 19:43
• i called a auto parts store they have royal purple that says it meets gl-5 and gl-4 can i use that? i know that red line stuff is good all try to get some of that the royal stuff is 13 bucks a liter is that good?
• #3 by cyrus #1 on 17 Oct, 2008 20:11
• You can get redline at bow wow.
• #4 by jtanguay on 17 Oct, 2008 20:32
• some people say good about royal purple and others dont say so good... redline seems to have an all around good rep though.  i think royal purple might be okay for transmissions, but i've heard some people say that you get better mileage because the oil thins out and gives less protection, but they also have this synerlec stuff (pretty much just moly from what i hear) to help lube everything up.
• #5 by danwithagolf on 17 Oct, 2008 21:28
• called them back and they said 18  bucks a liter for redline all take a look around from what i hear its good stuff i think all go for that thanks guys
• #6 by jtanguay on 17 Oct, 2008 21:39
• Quote from: "danwithagolf"

  called them back and they said 18  bucks a liter for redline all take a look around from what i hear its good stuff i think all go for that thanks guys

  
  
  OEM synthetic oil is about that price i believe... not cheap, but lasts a lonnggg time!
• #7 by smutts on 20 Oct, 2008 14:27
• If in the UK, Redline is harder to find. But Halfrauds sell Castrol SMX or was it SMS?) synthetic, which is GL4 and improves the box loads. A weighted shift linkage from the MK3 (friendly scrappy)  fits the Mk2 in a couple of minutes and improves the shift lots too. Until some time when the poxy crownwheel rivets will say "Hi there!" :roll:
• #8 by zukgod1 on 20 Oct, 2008 15:15
• I looked last night as I though I was running Redline in my trans, turns out I had 2 empty Mobile 1 bottle where I thought the Redline bottles were.  :oops:
• #9 by burn_your_money on 20 Oct, 2008 16:07
• I used synchromesh by penzoil in my last 2 gear boxes