I've owned my 11 year old zed for over 4 years and it's never missed a beat, only costs have been servicing it but you get that with all cars.
It's on 107 thousand miles too!
Sand with a fine grade paper until super smooth then oil which will raise the grain a little. Re- flat it if necessary then wax, I like Fiddes or Briwax.
As with gloss paints , avoid water based products , wood needs oil!
And I'm in.
No surprises there then
Only surprise is that it took me 5 hours to find a thread with boobs in, ...or at least the word anyway which is good enough as I have a vivid imagination.
You do know that there's specialist sites for your needs and that it doesn't take five hours to find them!