Being a former auto mechanic, my recommendation is to run from that car. After getting paid to work on cars all day long, the last thing any mechanic wants to do is work on their own for free. I got into working on cars so I didn't have to pay someone else. After a few years, I didn't want to touch my own, including changing oil and other basic maintenance. I've been out of it for 15 years now and I still pay someone to change my oil and rotate my tires. $10G in tools sitting in the garage that don't get used.
What year CJ?
Plumbers always have dripping faucets. Painters houses need to be painted.