So we change the spark plug today and we pulled the plugs and found that spark plug number (cylinder number) 1 2 4 6 has oil covering all over i mean top and bottom drenched with oil, but here is the twist it dose not smoke meaning it dose not burn oil, but what's strange is the spark plug are not even tight they are so loose you can unscrew them with your pinky with VERY little force... Number 3 and 5 were hard to open but there were no oil...So since there is NO oil spraying on top of the piston, where is this oil comming from???

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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi