I just figured with three older trucks, I'd have enough opportunity to use 5 gallons.

Have to admit, though, it is quite a bit. lol
Storing it on blocks... good idea... copy that.
Now how about temperature. The can sat outside last night, and believe it or not, it got down to 40 degrees. It's 44 degrees now and rising. How warm should it be before I use it, or won't it matter? (It will probably get into the mid 80s today.)