Howdy folks, I'm brand-new to group and recently purchased an '89 Crown Vic ex-fire chief car 5.0. Runs like a champ and mech rec. synthetic oil since "it has large oil ports". He says engine is very clean after redoing valve cover gasket and can handle the
20-50 weight. Using Ams Oil and have heard good and bad about it for 80,000 / 14 yr. old engine! Any opinions and thanks for the feedback. Happy New Year. (Put a '54' on the back in honor of the old show you old-timers may remember!!!)- posted
20 years ago