[dpark]

So I did a search on this and there seems to be conflicting opinions on what the service interval for diff and tranny fluid is. Some say 20,000km, 50,000km, 100,000km, and some even say that it's a "lifetime" fluid and will never need to be changed!

Coming from Honda's, I changed mine every 10,000km as I gave it hell. Can't comprehend the thought of only changing it every 50,000km or more!

Also, what fluids would you guys recommend?

[BMJ]

Originally Posted by dpark

So I did a search on this and there seems to be conflicting opinions on what the service interval for diff and tranny fluid is. Some say 20,000km, 50,000km, 100,000km, and some even say that it's a "lifetime" fluid and will never need to be changed!

Coming from Honda's, I changed mine every 10,000km as I gave it hell. Can't comprehend the thought of only changing it every 50,000km or more!

Also, what fluids would you guys recommend?

had only the fluid changed at 62or65k, plan to change it again with the filter in Jan. only changing it again as i kept the old filter.

[DR-JEKL]

I'm going to be using redline oil purchased from here:

http://www.gllubricants.com/index.ph...line-Pricelist

As you mentioned you use to change your diff every 10k kays, i use to do my cars every year with the engine oil 10-15k kays & will also follow this routine with my 335i.

[_ink]

Originally Posted by DR-JEKL

I'm going to be using redline oil purchased from here:

http://www.gllubricants.com/index.ph...line-Pricelist

As you mentioned you use to change your diff every 10k kays, i use to do my cars every year with the engine oil 10-15k kays & will also follow this routine with my 335i.

Love redline oils for the gearbox! They have always served me well!

I should also get mine changed at my next service.. Done 46K now and it probably hasn't been changed at all.