Alright, after some marvel mystery oil in cylinder 6 soaking overnight, no change. Pretty much confirmed the engine is toast. I never saw it coming.. no clue what happened. No warning.
Compression numbers as of yesterday...
Cylinder #1: 168psi
Cylinder #2: 145psi
Cylinder #3: 147psi
Cylinder #4: 100psi
Cylinder #5: 168psi
Cylinder #6: 12psi

Attached Images

 

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2000 e39 M5 Titanium on Black
2006 e53 M54 Titanium on Black
2007 e83 Black on Black Sport pkg
2004 Avalanche 2500 lifted 4.88 gears
1994 jacked up Jeep
1987 GMC lifted short bed on tons