[rockyfeller]

"Lifetime" coolant. "Lifetime" transmission fluid. Who's lifetime? Lol. Does it logically make sense? IMO there's no such thing.

BMW is not alone, nearly every auto manufacturer claims the same for certain items. We've been lied to for years. I think their view is that they know that the fluid will last longer than your maintenance agreement or warranty in the majority of cases. By claiming it's "lifetime" they get out of having to replace it during that time period. After your warranty is up, the truth is that they want you in one of their new cars! It's all about the money.

If your car breaks down after that time period, just see. They will claim you didn't change the fluid and it's your fault! It happened to me with my old Acura and Honda's notoriously terrible transmissions.

Better to do your due diligence and do fluid changes more often than not. Fluid/preventative maintenance is cheaper and gives peace of mind.