View Single Post
Old 04-04-2024, 07:33 AM   #3
SARAFIL
I like BMWs
 
Join Date: Oct 2003
Carmudgeonly Ride: X5 M50 / M550
Location: Boston, MA
Posts: 5,795
Motor Oil Age Doesn’t Matter as Much as Mileage: Study

Quote:
Originally Posted by equ View Post
I've always said this. If I don't accrue enough miles, I'll go 1.5 years on synth. I could see stretching to 2 years, for under 4k miles. IIRC, my 06 cayman S specified 2-year intervals. I also see no reason to dump gallons of still OK oil back out into the world. Come to think of it, I'm not sure where those go, something to google.

All that said, during my e46 m3 search a decade ago, I came upon a car that was Imola, pristine with 14k miles or so and local-ish. The catch? This 05 or 06 car, had its break-in change and then again a change in 2012 at 12k miles (roughly). I was like "How is this ok?". Seller got testy and said this is what the car's computer told him to do. Later ended up at that overpriced Ohio m3 seller, selling for big money...

Ugh. I think (memory getting worse these days) that the E46 service indicator was only mileage based (miles/amount of fuel used). They added the time-based alerts in later models, believe the E9x and later.

Speaking of - my M550 was due for an annual service based on time only (still short on miles) in March. Now that we’re in April, I start getting a nasty “your engine might explode if you don’t service the car immediately” type message on start up. Annoying enough that I’m getting the oil changed today, so I guess it did its job. 😁
__________________
2020 X5 M50i -- Alpine White / Coffee Leather
2020 M550i -- Carbon Black / Beige Leather

Last edited by SARAFIL; 04-04-2024 at 08:43 AM.
SARAFIL is offline   Reply With Quote