1999 Chrysler Sebring Coupe 2.5 oil in spark plug tubes. Replacing valve cover gaskets and spark plug tube seals at top of tubes. Concerned about bottom of tube. Is that an area that might also be leaking? Should I re-seat the tubes? All 6 tubes were full of oil.

the spark plug tubes seals are part of the valve cover gasket most valve covers toque to 80-105 INCH pounds and ther spark plugs on a COLD head are 15-21 FOOT lbs HOT are 15 FOOT lbs.

If you saw fresh oil, you were looking at valve cover gasket-seals leaking into the spark plug tubes.

You need a new valve cover gasket set. This will come with seals that fit around the spark plug tubes.

Oil leaked into the sparkplug tube from the round valve cover seal at the top of the tube. Replace valve cover gasket with spark plug tube seals and problem will be solved.

1.your valve cover's spark plug chamber seal is leaking. Which requires removing the valve covers and replacing the gaskets and seals. 2. Excessive oil spills on to the valve cover and ignition coils when adding oil.

**This excess oil on the plug boots can cause the coils to short and eventually fail.

Usually this is due to the spark plug tube seal allowing oil to escape from under the valve cover down the tube. You will have to remove the valve cover and replace the seals. You might consider replacing the valve cover gasket at the same time.

you have to remove the valve cover and flip it over to access them, best off to get a new valve cover gasket as well.

although I am not familiar with this particular engine my son's Mazda Miata had oil in the plug holes and it only required a new valve cover gasket to fix it.

is there oil actually in the cylinder? or is the oil in the tube that the spark plug body lives in? if it's just in the tube, then you only need a valve cover gasket set which comes w/ a round rubber seal for the top of each spark plug tube. if however, the oil is actually in the cylinder, then you either have a faulty piston oil ring or faulty valve seals. the repairs for rings/seals are a giant PIA. let's hope it's just the valve cover gasket set

I would try snugging down all the valve cover bolts before replacing anything. A valve cover gasket kit should have the grommets and gaskets necessary to repair this if you find no loose bolts.