which oil to use in a 2001 MK4 5 speed manual transmission?

300D

Veteran Member
Joined
Jun 8, 2018
Location
Coast of Maine
TDI
2003 Jetta Wagon TDI, 5-speed, 270K
Just another vote for the Pennzoil. I replaced mine awhile back with the Pennzoil syncromesh and it went from being a bit catchy to very smooth. 265k miles on the Jetta Wagon.
 

Genesis

Top Post Dawg
Joined
Feb 26, 2003
Location
Sevier County TN
TDI
'03 Jetta Wagon
Any GL4 will be acceptable. Which you WANT to use is a different story. I like Redline MTL, but Synchromesh is also a good choice -- as IMHO is the OE VW fluid.

NEVER, EVER put a GL-5 gear oil in a synchronized gearbox UNLESS the manufacturer specifically calls for it -- which is typically NEVER the case. That includes a lube that has BOTH GL-4 and GL-5 specs on the bottle. If GL-5 is on the bottle, and you use it, you are very likely to be tearing the gearbox apart and replacing the synchronizers.

Higher numbers are NOT always better!
 
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