Ok im about to chage my intake manifold gasket. Do i have to change the oil and antifreeze. Can't I reuse it. HMMMM..... Needsome help...

 

Oil is a resounding yes. If you get any anti freeze in your oil and do not change it you could damage the bearings. You should replace the antifreeze since there is a chance that the antifreeze became acidic and thats why you have to replace the intake gasket. Unless you want to to replace the intake gasket again next summer.