Big 10-4 nope to clear coat. Easy to mess up. Hard to reverse. But when it comes to my keepers I say damn the torpedoes! Boiled Linseed Oil always. I would never use it or anything else on something I planned to sell or thought I could make good money on because of course that would drive the purists from the buyer pool. And if selling a treated bike do the right thing and always disclose what you’ve done to it. But all my babies get the BLO treatment. It’s easy, protective, and looks great in my opinion. I’ve used it on old paint, rust, and raw metal. Love the results.