Went to Home Depot to check out the Zep. Its got properties like oven cleaner. You will need to wear a respirator just as you should using solvents ,but this stuff will also burn your skin.
Looks like I'm back to Varsol.
I poured some into a metal container and it doesn't burn when applying a flame. If on a piece of wood it burns good.
I'll have to be careful I guess.