I sandblasted it before I started welding on it. After sitting for a couple of days, you can see oil that had seeped from the seams in certain areas. It's mainly contained around the steering box area. As I was welding on it, you could see oil bubbling up because of the heat...not to mention the smoke created from welding!
I had planned on blasting it again before I primed/painted it, but obviously paint won't stick to oily surfaces.
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