My 94 geo prizm seems to be leaking/burning oil and lots of it. I was putting 20w-50 up until recently after i replaced my valve cover gasket which was leaking. I figured maybe i fixed my oil leak and started putting 10w-30. Well the car seems to be needing more oil now. Where else can the oil leak from. Im pretty sure i need a head gasket but that is my last option right now since it can be very expensive. I wanted to replace my Oil pan gasket. Do the 94 geo prizm 1.6 L engines use a rubber gasket or a silicone gasket. For some reason the toyota dealer told me it was silicone but on rock auto I see they offer a rubber gasket. Any other places I can check for oil leaks? Or is there anything i can put in the engine to seal up oil leaks. The oil is leaking at a alarming rate. Or how do you know if it burns the oil that could be another reason for my oil consumption.