It is normal for an internal combustion engine to burn some oil between changes.

I believe that the M112 will naturally burn more oil than the M104 due to the lower tension rings in the M112.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record