My 2008 dodge grand caravan oil looks like lowfat light chocolate milk?

With 15 years experince as a mechanic it sounds to me that you have a blown head gasket that would result in antifreeze leaking into the oil system. which will cause what they call the choclate milkshake. the funny exhaust smell and white colored smoke is caused from the head gasket leaking coolant into the combustion chamber and when coolant gets into the combustion chamber it burns the coolant and forms a white smoke out of the exhaust that will have a sweet smell. replacing the head gasket and having the cylinder head checked at a machine shop will solve your problem. if you remove the spark plugs one at a time you will probally find one that is wet with a unusual color or may even find two spark plugs that way indicating head gasket blown between two cylinders which is most likely your problem. if not fixed soon driving will cause crankshaft bearing damage which results in engine lock up or crankshaft parts like a piston rod to start to knock or fly apart ruining your engine. i hope this helps you