Onan QG4000 generator oil plug leak
Hello. After my last oil change on the generator, I have had a small drip/leak coming from the drain plug. It is not cross threaded. Should there be a brass o-ring on the plug that I dropped and missed? Did I lose it and not know it? Should I have put some Teflon tape on the plug? The plug is tight but not over torqued. It it is not a major leak it's just getting oil all over the pan and ground. Has anyone else had this issue? THANKS
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