120k Care Package

[stevieeg]

I bought my 05' 4.8is Exclusive 3 years ago as a bit of a gamble... I planned to do any servicing and address any issues that arose myself and run it on a shoestring. It's worked out very well, and she's made it from 96K to 122K on the clock with only service/wear parts, a steering angle sensor and a new door handle (OK, Two)

When I look around at potential replacements I find myself thinking "why bother?" The car doesn't smoke or leak at all, and shows no sign of transmission shunt. It is still a lovely cabin, and many of the newer cars I have been considering can't match it as a place to sit. A couple of years ago I added an M3 SMG steering wheel with paddles and the direct control makes it a very pleasing drive.

To that end, I think I am going to do a mid-late life update: A full set of fluids, Oil, Coolant, and Transmission. I will also replace the noisy panoramic roof seal, and possibly install some more modern ICE if that's possible without spending enough to raise my wife's eyebrows.

I'd appreciate any advice on any of the points of the refresh, but most crucially: Given the "for life" claims of BMW on the Coolant and Transmission fluid, is it possible my attempts to keep her healthy might introduce more issues than they seek to prevent?

Any other mods that people think are well worth doing beyond the paddle shift?