list the ones you've tested. recommended and non. old and new products used. mostly spray cans so far, the krylon clear protective coat worked for me but decided to try something i've known from my days back (way back) in the paint dept at rona. krylon clear two coats maximum *edit* but has dulled the sheen and colour of the paint. i would not recommend this unless you're painting semi-gloss. testors crackled on some parts but test maybe flawed. canadian winter and heat in the house may have contributed to this. corrostop from sico. this thing is toxic. smells a way worse than your normal krylon finish. but if you've used testors previously, its almost the same. this baby has a very wide radius but has a extremely fine spray. finer than those fusion nozzles. i have tested two coats, scratched it with my keys on a test part. nothing. i had to grind for about a 5 minutes before i could even make a mark. the shen is fine. i used it on my silver vette. comes in a large can for only about 7.39 cdn. which is probably around a 10 dollars US. lol the can says wood and metal only but work very well on my alt. pics will be posted as well (when i find that prime part) and appreciated for those who do post.