[Maxf80M3]

During my s65 swap took a closer look at the motor we removed . Seems like cylinder 3 melted and disintegrated. Was picking pieces from the oil pan. Interesting enough the rod bolts and bearings are still intact . Cause ?? Lean condition ? Detonation? Bad gas ?? All this car had was a tune and a crank pulley. Went kaboom at 150km .