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DISCUSSION => Engine + Driveline => Topic started by: jwetering on July 26, 2020, 03:50:47 PM

Title: trans fluid - redux
Post by: jwetering on July 26, 2020, 03:50:47 PM

OK guys.

I know it's been covered because there are exactly two strong but entirely different recommendations on the internet regarding the correct fluid to use in a Getrag 240 / m42 setup.

Mine driveline was pulled from a 1990 318i. There are no tags on teh graebox.

Do I use ATF or do I use a 75-90 gear oil like Redline MTL ?

Thanks

Title: Re: trans fluid - redux
Post by: bmwman91 on July 27, 2020, 01:14:47 PM

Just run Redline MTL or MT90 (MT90 is a little thicker, but I found it reduces the transmission rattle with my light flywheel a little). I've run it for almost 2 decades in G240's and not had a single issue, despite mine having the ATF sticker. If you live somewhere where it gets very cold, maybe stick with MTL since MT90 could make cold shifts a little harder.