I have what I think are factory aluminum wheels on my Z. I think they are factory since the 74.0 I have now and a previous 70 both have them. They are aluminum and have a mesh on the center section. My question is this...I plan on spending a large amount of time this weekend cleaning off the oxidation from them and polishing them. I bought some Mother's aluminum cleaner/polish and am wondering if there is any way other than continually reapplying it to keep my wheels clean. Any advice ??? And does anyone know if these were factory wheels or just so popular in the 70's that I happened to get two cars with them ??