Transmission flush

[robojoo3231]

Hi, dudes

I'm gonna flush my auto tranny, which has ~45000 miles on it.
Is is OK to flush it?

I'm a bit worried that flushing may hurt converter or anything since it has many miles for 4 years.

Thanks,,

[mcoupemindy]

Hi, dudes

I'm gonna flush my auto tranny, which has ~45000 miles on it.
Is is OK to flush it?

I'm a bit worried that flushing may hurt converter or anything since it has many miles for 4 years.

Thanks,,

BMW says that their transmission fluid is "lifetime" fluid - that's rubbish.

Depending on your year and model (it's always helpful to post this info), you may have a transmission filter to change too. A good quality ATF (like Royal Purple) is a good for maintenance of the auto transmissions.

[Bob]

This term "lifetime" in all warantys should have the mileage listed that is expected to be achieved at time of death!, I think your mileage is a little over Mike's old school maintenance in the Roundel, and can be problematic if the new fluid and flush breaks some sludge loose that gets lodged in a valve body, very common in delayed tranny maintenance.

[pseto]

I would say do the flush now; the tranny in my x5 died around 90k and i still kick myself that i learned $3k later.

[John in VA]

I want my cars to last MY lifetime, not a component's lifetime. You're fine to flush with 45-60K miles. I agonized over this with our then 9-year-old E46 with 60K miles on its GM auto tranny. Did the BG flush at Convenience during one of the DIY tech sessions. Its has functioned perfectly.

[prentissra]

Go ahead and flush the transmission. There are several DIYs on the net on how to do it. I used MaxLife (it is BMW compatible). Figure parts and fluid will cost you around $100. It can be done at a DIY event.