Diff and gearbox oil how often?

Babw · Post by **Babw** » Wed May 02, 2018 11:53 am

My Z4M is in for a routine oil service and I was considering gettting the diff and gearbox oil changed at the same time. I don’t do enough miles for the inspection intervals to roll around more than every 4 years but that seems a long time in between fluid changes.

It’s been 2 years and 7000 miles since I’ve had all the fluid changed.

What do others do?

Marlon · Post by **Marlon** » Wed May 02, 2018 11:57 am

They're supposed to be 'lifetime' oils, but most members recommend changing at around 60k. Its on my list this year.

mr wilks · Post by **mr wilks** » Wed May 02, 2018 12:30 pm

Marlon wrote: ↑Wed May 02, 2018 11:57 am They're supposed to be 'lifetime' oils, but most members recommend changing at around 60k. Its on my list this year.

Not on S54s Colin , they should be done every Ins2 which mileage terms generally equates to around 35k /45k
I doubt you need to be concerned after just 7k or 2 years op

Marlon · Post by **Marlon** » Wed May 02, 2018 9:28 pm

mr wilks wrote: ↑Wed May 02, 2018 12:30 pm
Marlon wrote: ↑Wed May 02, 2018 11:57 am They're supposed to be 'lifetime' oils, but most members recommend changing at around 60k. Its on my list this year.
Not on S54s Colin , they should be done every Ins2 which mileage terms generally equates to around 35k /45k
I doubt you need to be concerned after just 7k or 2 years op

After I'd posted I thought I bet there's something 'special' about the M

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