The guy that bought my Miller was a pro detailer. I told him the gel was cracked in spots under the paint and after you waxed it you could see the cracks as white wax lines. This is a copy and paiste of the two emails of this guy's recomendations for wax.
"Hey Rod, I use a wax called "Pro Gold" put out by a company called "Pro". They sell all kinds of detail supplies and I have been using Pro Gold for 10+ years. I use it for a buffing compound and also a hand wax. It's the best all around wax I have ever seen. It is gold in color but not liquidy like other waxes, it's still a liquid but thick so it's not runny and messy, it usually doesn't leave traces of wax unless you use too much. Here is the the web site,
http://www.prowax.com/waxes.shtml, it's the 1st item. It's like $33/Gal or $9/pint. There is also some wax for boats down the page a little, it should be good but I have never tried it. The Pro Gold is good for any painted surface from boats to cars. Anyway, it's the best in my opinion. Hope this helps you. Later"
"I was just looking looking at the page with pro gold on it and at the bottom of that page is another hand wax I use to use until pro gold came out. It's called "yellow wax". It is an awesome wax that will leave no traces of residue, it is kind of transparrent and it will work you to the bone."