Thanks, Dave. I'm wondering because an exterior section of my oil pan developed a bit of a rust bloom (where the machine shop that cleaned it forgot to put anti-rust grease on). I angle-grinded the rust off, but it started coming back within a day or two. I angle grinded again, then immediately put Rustoleum Rusty Metal Primer on.
I was worried that once I remove the anti-rust grease from the gasket surfaces they'd also start to rust. But sounds like I don't have to worry about that.
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