Mineral Spirits Paint Thinner
It's hard to beat good old mineral spirits as a paint thinner.
Mineral spirits have replaced turpentine as the “standard” paint thinner for oil-based paints.
While it is more volatile and flammable, it does a better cleaning job and is considerably less costly.
The purity and low toxicity of mineral spirits allow it to expand its role well well beyond a small paint job.
Mineral spirits can be used to remove paint as well as oils, tar, or gunk from larger surface areas: like garden shears and saws, metal and wood worktops, and even concrete floors.
While paint thinner, too, can be applied to metal, wood, or concrete without damaging it, its higher toxicity and its emission of more noxious fumes make it unsuitable for use as a cleaner for large surface areas—best to save it for spot treatments.