I hate to put this question on here as I know the storm its going to create,.....Buuuuut. I'm "about" to get my first 330i (whoooo hooo). High mileage very well kept. I have a MINI that's why I know the damage of this question. Here goes... 2004 330i sport/premium AUTO 100k ......... tranny service - is the Redline D4 ATF enjoyed by most and is the Beck Arnley filters a good choice? ......... Rear Diff - Red Line 75/90 or 140 I don't believe in life time lube sold by anyone. This little bundle of fun will have all the fluids flushed within a couple months regardless or the clean maintenance records. BTW - I did search for these answers and didn't clearly see them, but that doesn't say much.