[bloodnut]

Just done 105k service on the bosses i30, apparently the manual transmission fluid needs to be changed  also, dont think the dealership has done there job properly, the pollen filters were so blocked I doubt they had been changed, hence i'm doing a full service.
Have done a google search & read manual, seems to be not to specific on which fluid.
Have used auto fluid in current ss ute & bt50, thought i30 might use the same.
Any input welcome.
Thanks in advance.
Cheers Tracula

[rustynutz]

In my manual (section 9-4) it says the Manual Transaxle Fluid should be API Service GL-4 (SAE 75W-85, fill for life)   

[Phil №❶]

The workshop manual page



1.9 lt for Petrol 2.0 lt for Diesel

[bloodnut]

Thanks for prompt response guys.
Cheers 

[Doggie 1]

I can't remember the fluid recommended by my service centre, but having discussed this issue with him he did say that there are better quality fluids than the factory fill which would be likely to improve shift quality, so although it might be filled for life, I wouldn't discount doing it.

[Phil №❶]

And there was this blast form the past too.

https://www.i30ownersclub.com/forum/index.php?topic=15505.msg244303#msg244303

[Paolo5]

Referring to that blast from the past....gearbox running really smoothly. Done just over 47K now. I really like the LiquiMoly products.

[Phil №❶]

Good 

[Lakes]

If i ever changed gear box oil it would be with  Redline, but 6 speed seems ok as is

[Paolo5]

If i ever changed gear box oil it would be with  Redline, but 6 speed seems ok as is

Thanks Lakes...now I have a case of gearbox envy..

[wozz]

Used dexron 3 auto transmission fluid in my 96 excel 5 speed manual.
Car died at 500 000k's, all highway k's.
Never had any clunky gear changes,  regardless of cold morning's .

I'll do the same with my i30 once the warranty is finished.

[Keith]

I never did find the Drain & Fill points on my 1.6 petrol manual shift transmission... 

[Doggie 1]

Redline was recommended for my GT. I might give it a look for the i30.
Unless Nulon do one perhaps.