Rust on Oil Cap

[Scudrunner]

Took the cowls off and did a good clean of the belly today and inspecting everything I could and noticed this on my oil cap.

8F0A650B-18FA-4329-8220-188CE7E5DAB0.jpeg

I brought this home to take some emery cloth or Dremel to it. Any tips or suggestions ?

I know many advocate for popping the oil cap off after a flight let any moisture evaporate.

[Colonel]

Don’t look inside the filler tube it screws into.

Not a fan of painting or chroming this stuff. When it flakes off, it starts circulating inside your engine.

When I land I like to open it to allow the hot air to convectively carry the moisture out.

[Scudrunner]

Popped the gasket out and got to work. It looks pretty good now.

A9791F58-A70F-4C77-B37F-07821052D16E.jpeg

[Colonel]

Looks nice!

New rubber seal?

[Scudrunner]

Same one as when I took it off I’ll rub some oil around it when I install it tomorrow.

[Colonel]

https://www.aircraftspruce.com/catalog/ ... kkey=36235

Spruce sells them in both 1/8 and 1/16 thickness in that nice orange stuff

Different than a fuel cap - a new gasket keeps the oil cap tight so it doesn’t unscrew.

Let me know which one you want and I’ll mail it to you. I live just up I-5 from Corona. I have 3 shipments from Spruce in UPS right now.

[Scudrunner]

It looks pretty new, ill take a closer look at the rear engine see what shape its in the engines only have 280 and 80 hours on them total.

Is there a difference between a red one and black one?

[Colonel]

If your oil caps go on tight don’t bother.

I like the “real” orange gaskets. Great for rocker covers.

The important thing is the dimensions and the material must resist petroleum solvents.

The rest is cosmetic.