Bought 1977 FJ40 1 month ago. I've done some minor maintenance on it. It had not been licensed for 6 years. Great looking FJ. Took her to town and blew all the oil out in 1 minute - lost the engine. What happened (pvc)? Best repair a new/used engine? What do i lookout for going forward? Bought this for my son and plan to keep it forever. Thanks