If you are poor, like me, and can't afford all that
"20$ for 2oz, like it's your LUCKY DAY" crap, try
Automatic Transmission Fluid. A light coating
cleans while you sleep. @5$ A QUART.
Imagine, an affordable solvent which does the job
while allowing you to rest. It's also a great corrosion
inhibitor for semi actions. When you wipe it off during
cleaning, the soot comes right with it.