oil cap on my 1992 300ce3 m104 is also a tight little bugger.

I have a large wrench that I use to just give it enough to loosen when I need it.

I have founf some fo the va;ve cover paint underneath is not there. I would assume heat makes it stick. unless mine is leaking I'm not going to bother changign the cap for a new one.

I'll just use my trusty wrench for the added torque to get that sucker off.

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon