please help on 2003 Chevrolet Venture

i dont have a manual for this , wondering what type oil is best, and losing little antifreeze per mnth and motor gets hot why

Asked by for the 2003 Chevrolet Venture
Hello , i am asssuming that the engine is a 3.1 litre engine .. The best oil to use is giong to be 10w30.. these engines are notorious for the lower intake manifolds to leak coolant , if it is leaking it needs to be replaced along with the oil change.. If the vehichle has dex cool coolant in it, replace it with the normal green coolant or a universal type coolant ,, dex cool eats up gaskets, and creates many other problems
yes, do not use dex-cool, use regular anti freeze!!!!
ur saying dont use dexcool? just normal antifreeze? correct, and thank you for ur response