Ignoramus18849 fired this volley in
:

What liquids wuld you recommend for US cleaning?

I used hot water with TSP, but would like to know if there is anything
better. The application is usually removing oily crud from iron items.

i

For oily or greasy items, a strongly basic solution of almost anything
would work. All you're doing is saponifying the grease into soap.

Lye would work, so long as it's dilute enough not to strongly etch the
work.

Some solvents are OK, too, but watch for low flashpoints in ultrasonic
gear.

LLoyd