Hi Dave...Use this
Hi Dave,
There is only one product to use. It is NYALIC by Eastwood. I have been restoring classic cars, bikes etc. for over 40 years, and this is what all professionals use.
This is as thin as water, and can be applied with a soft brush. You can purchase this online from the Eastwood Company. Eastwood makes and sells the best restoration products.
One can of this will last a lifetime. I have used this to coat over polished brass, copper, steel, aluminum etc. It does not have a thick coat so it actually runs into the recesses
to protect even the hidden areas. The best way to use this is to do it outdoors on a warm day for faster drying. Buy a soft "Artists" brush from A.C. Moore for a few bucks.
Apply only one coat to a warm metal surface, and you are done. There is no build up and it will never yellow or change the color of the parts you are coating. They may even sell this in a Rattle can.
Don't use any varnish or other clear coatings. They are too thick and deliver poor adhesion. Also, you don't need very much, so just buy the smallest size Eastwood offers. I have a quart for years, and it is still over half full.
Good luck...................Wayne