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Originally Posted by eomak
hi, i was able to look inside the sparkplug entrance and it looked pretty dry and clean but was some oil on the threads.Any reason y the O rings would leak if that and on low milage engine?I guess only the way is to check a sparkplug 2 weeks from now and c if oil on it again.Some thing i should be worried about?
thanks
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O rings do leak on the M96 engine and usually call for a replacement of the o rings and sometimes the tubes at some point, but usually not at the mileage you report.
If your tubes appear dry, I would do as you say and install them - dry. Perhaps the originals weren't torqued properly and the seals on the plugs didn't seat properly allowing some oil to migrate up the threads - they s/b torqued to 30+3Nm (22+2Ft. lbs.) first fitting, 25+5Nm (18+3.5Ft. Lbs.) on any subsequent fittings of the same plugs.