Winston wrote:

'Varnish Makers and Painter's' naptha is the only way
I've found for removing baked-on grease from metal surfaces:

http://paint-and-supplies.hardwarest...er-618030.aspx

It's disappeared from the shelves at all the hardware stores in
my area. Some now carry a 'substitute' product in gallon cans,
but I don't want to spend over 20 bucks and then have to drive
it to Hazmat Disposal if it works as well as do most
'substitutes'.

What's a practical alternative? Gasoline?

Ronsonol or Zippo lighter fluid. It's almost pure naphtha - it will
even get gum out of hair.

Cheers!
Rich