I've recycled Kroil from an engine-freeing job by straining it through a couple of layers of coffee filter. Even if it gets a little dirty, it still has excellent penetrating ability.
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!