oldno3fan-
"used some today wow its great stuff highly recomend"
Are you referring to the SEM?
I recently bought a spray can of SEM to test sheen for chassis and black parts. Also have been comparing ZR and Rust-Lok [a PETIT marine below waterline primer that I have not seen anyone mention (guessing like POR15 b/c of U/V exposure instability, etc ?)].
If SEM is truly comparable to ZR then I would like thoughts or cyber shoulder shrugs.
Thanks!