Best chemicals/solutions/goops to clean off gear oil, etc. on a chassis

[Tim Ayers]

My AV8 has been on the road for just under 2 years now. This weekend, I was going over it, doing some odds & ends. I noticed some gear oil has accumulated under the trans and on top of the K member.

I'm looking for some paint friendly chemicals/solutions/goops that others have used to clean up heavy oils/grease such as gear oil, etc on a chassis.

Thanks,