I started using Krylon "tough coat" green corrosion inhibiting primer at the recommendation of the area specialty shop. (Space Age).
I went in a while back for some more but they were out so I tried the Tempo, and hated it.
The Krylon applies easier and looks better with one coat than the Tempo does with two. It also dries faster, smells better, and is about three dollars a can cheaper.
After two cans of Tempo I took the rest of the case back and exchanged it for the Krylon.
The Krylon is product number 00344 and meets MIL spec TIP-1757