cleaning question

hey guys, i got an old cast iron stew pot on craigslist. it had quite a bit of rust on it. i alternated vinegar soak and steel wool scrub to get the 'top' layer of rust off. when the pan is wet, it doesn't look rusty, but when it dries out, it still has the red tint of rust.

do i need to keep soaking/scrubbing it?

or will it look normal when i put oil on it to season it?