Vehicle: 2008 BMW M3, 6MT
Production Date: 06/08
Oil Used: TWS Motorsport 10W-60, 7500mi intervals
Mileage: 106,XXX mi
Fuel: 93 Oct
Driving Habits: Mostly highway driving, no track use
Oil Analysis: None provided
Notes:
This particular M3 was fully serviced under scheduled maintenance and meticulously followed thereafter with oil changes every 7500mi.
The VF540 Supercharger was installed at 92K. Now at 106K, a VF620 Supercharger upgrade was scheduled. After some discussion, it was agreed that an inspection of the rod bearings was in order during service.
Connecting Rod Bearings, showing excessive wear on #4 & #8
Closeup, Rod Bearing #8
New vs Old Rod Bearing - Comparison
As seen, Connecting Rod bearing #8 suffered the most damage, with all remaining bearings showing considerable wear. Needless to say, prolonging this would have likely resulted in engine failure if not handled sooner.