My absolute favorite work gloves are Tillman TrueFit mechanics gloves.
Excellent for everything. I used these when I was welding, good for handling, heat, welding, grease, oil, sharp corners/edges. They are extremely comfortable. I love them.
http://www.jtillman.com/search/gloves.html
I use imact gloves at work on the plane. Ive never used them for working on a vehicle, The most I do is working with chains, winching, straps. But I really like these gloves. They are very comfortable, and very strong and are not too bulky. I dont know what they cost as they are issued to me but I would buy them personally.
They are the Impact CT gloves
http://www.southwestmotorsports.com/...Info%20NSN.pdf
http://www.southwestmotorsports.com/products.htm