I drove a chevy Luv pickup in college like that...
occasionally the oil lght would come on, and I'd pull over and add some more oil... I bought the cheapest oil I could, by the case, because I knew it wasn't going to be in the engine for long.
eventually I pulled the engine, put a rebuild kit(gaskets, bearings and rings) in it and drove it from lubbock to austin all the time for another year... not bad for a $200 car, + $145 rebuild kit..

we need a "shitty car thread" all the crap cars we had to make due with