Its customary today to seal ALL sides and the ends especially by leaving the ends standing in a pan of the sealer overnight.
Once any finish cracks it will let in moisture and then its over. Black looking cracks will start to appear.

Mar-K had some extensive testing on different finishes. Some of which may surprise you. Got to their site and check out their results.

Note, I do not know but I would think the factory only painted or finished the top to save time and money..... and I think the type of wood would also have something to do with it. Check out Mar-K and I think your questions will be answered.


1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile