Hi Van folks,

I have an 84 with 276k on it. She's aged pretty gracefully but there are some issues that have come up.
1) The oil light comes on when the engine has been running for a while, even though the dipstick reads full. The light doesn't stay on consistently, it'll go off when I hit a bump or go around a corner. I'm thinking it's my oil sensor, but have yet to locate where that is...?

2) Found a crack in my radiator after beginning the process of flushing the system and replacing some of the hoses. (As I was replacing the thermostat which was beyond toast) The heat wasn't working in the front at all and the back was minimal. After the flush something broke loose and it started working. But when I was replacing the hoses under the passenger seat I noticed how much debri was in the line... ick! And that's when I found the hairline crack at the top of the radiator.
I've been tracking down a new or slightly used radiator... not an easy thing but my friendly Napa guy found one he says, new $110...I haven't confirmed it's in fact the right radiator. Anyone have any knowledge on where to get the proper unit and how much it should cost?
I intend on replacing all the hoses in the system thanks to your handy pictorial.