[JABCAT]

There's always a lot of debate about proper oil change intervals. I'm one who more often than not follows the manufacturer's recommended maintenance schedule and/or the vehicle's computer system telling me when it's time to perform services. I've owned 45 vehicles to-date, and save for a replacement LS1 in my WS6 Trans Am for a known oil burning issue, I've driven hundreds of thousands of trouble-free miles.

Here's the Blackstone analysis for my '23 M2 with oil changed following the CBS interval. Original in-service date was 8/25/23, 1,200 mi break-in service completed in Jan/'24 at ~1,150 mi. Oil was changed 8/21/24 with ~10,200 mi on the odometer. CBS alert said oil change due in about 500 mi at time of service.

As indicated on the report, there was about 9,100 mi on the oil at the time of the oil change. I drive exclusively in M1 or M2,
M1: all settings in Sport, transmission in D2. Traction control on.
M2: engine & chassis in Sport+, everything else in Sport. Transmission in D3, DSC off, traction control 50%.

I drive 500 mi each weekend (250 mi one way), interstate w/ACC set at 85 mph with maybe a few jaunts & hard accelerations a bit above that (gotta quickly pass that slower traffic). During the week I commute 28 mi round trip city driving. I've got a few mi stretch that is nice & curvy, so I hit M2 and do a little paddle shifting taking the 35 mph curves at around 65-70, if traffic allows. Between all that, the car sees some fun hard accelerations, freeway on-ramps, etc.

Take it for what it's worth.

[BroDoze]

Thanks for posting!

[chris719]

I would personally prefer to run higher HTHS LL-01 like M1 0W-40 or PP Euro 5W-40 in this engine. If you are going to run it this long I would also suggest you get TBN done also next time. Viscosity is almost 9 cSt which is a bit higher than many UOA we see on this oil, so there is perhaps a bit of oxidative thickening occurring.