datsunscott

To Fill: I would clean it good and sand with rough sandpaper, then hammer it in a little bit to make a good vee. Prep with an alimunum...

Back to marine oil: Depends if the motor has a pump and water cooled or vintage air cooled. TCW3 rated marine oi water cooled, 2...

Rust: Putting a wet rag and soaking the key in evaposust will remove the rust easily without damage- it is non-acidic. Better and...