I swear by black nitrile gloves for all mechanical work now. I buy them a size too big so as my hands sweat I can just pour it out. They don't affect my feel for anything I need to do on the car and I no longer have to use barrier cream or spend ages scrubbing the grease out of my skin/nails. I keep a pack of them in the back of the car for any roadside assistance or just-in-case.