oil in vacuum lines

Yes find the source of the oil leak. Are you sure its oil or could it be Power Steering fluid. 90's Dodges are famous for the PS pump leaking at the fittings on the unit not the pump. If your PS lines are leaking just replace and do not attempt to tighten (it will get worse) experience and gallons of PS fluid are what I base this on. The over pressure created in the engine compartment from the fan will fling a drop of fluid to look like a quart.

my ps line is leaking, its being replaced. but even then, the oil is IN the vacuum lines, and IN the air filter housing.im replacing the two valves, if that does not fix it, i am putting a can of seal restore in to check the seals

PS fluid wont get into the vaccum lines past the booster. PCV stands for positive crank case ventilation, so your truck doesnt have a crankcase breather its all contained into the PCV valve. your best bet after you buy a new one, is to get the mini cone filters that you can mount right on the valve itself, this will eliminate it from dumping oil into your vaccum lines if it fails again. PS i had the same issue on the same truck.

oh and dont use that seal restore stuff. ive seen it knock the bottom end right out of a 460

its just cause the pcv valve was bad i have the same problem my gets oil build up in the air filter box if you are not loosing vacuum then i would not worry about it