Plastic oil filter housing...Paint pen?

Changed my oil this afternoon and after I reinstalled the filter drain cap I used Dykem industrial paint pen to mark a reference for myself later. Is there any concern that the paint pen would be harmful to the plastic oil filter housing? Probably a dumb question, but that’s my ocd for this evening! Thanks

 

Maybe but probably not. More than likely not.

 

I don't believe it will harm anything.

 

It will be fine. No worries.

 

I have no concerns. It’s your truck, not mine.


Seriously though, that composite material stands up to hot pressurized oil for countless hours without failure, so I’m not concerned about the paint chemically altering it much in a few minutes until it dries.