My understanding is mineral spirits is the base for some of the fancy parts washer solvents such as safety clean.
I’ve had good luck with straight mineral spirits.

Also use diesel fuel on occasion, works pretty well but does leave things a little oily. Rinse with brakeclean.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-