Virtually none of the commercial "flush" products are worth the time it takes to use them. The tree huggers have defanged anything that actually works in the name of "protecting the environment", so you have to get creative with the stuff they haven't gotten around to banning- - - -yet! Try finding some "white lead" these days to use as a dead center lubricant on a lathe or a gear tooth contact pattern indicator when setting up a rear end ring and pinion sometime! The 5 pound can of Dutch Boy white lead that I bought on Ebay is about a three lifetimes' supply for me, fortunately!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!