Hi all! Discovered that on my '82 300SD the oil plug is mostly stripped and unmovable and I will have to take it into a mechanic for replacement.

I am preparing to replace the glow plugs and upgrade the replay to the post glow. If I run into unmovable glow plugs can I use a lubricant to get them to loosen?

Thanks!

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1982 300SD (wagon turbo engine) 315k mi (Frau Blücher)


http://216.231.35.232/1985_Mercedes_300sd.jpg