White spirits or white gas is campstove fuel. Coleman sells it in gallon cans at your local hardware or camping store.
Gas leaves a residue on parts cleaned. I'd just wander down to my local automechanic's shop and borrow his parts washer. It's got a nice brush and uses a safe solvent, and any mess is left in the sink and recycled by design.
Spray brake cleaner will do a nicejob with no residue and it evaporates so there's no clean-up.
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.