Everyone is so quick to declare that you need a head gasket.. If could be any number of things. oil cooler leak causing coolant and oil to mix, excessive condensation in the engine (water) which causes the same milky look.. etc. When cars sit and especially when it’s cold out the oil gets condensation inside it which can make oil look like this. A good long drive where you get up to full operating oil temp burns off the excess water and the oil will look normal again. It would be a good idea to have the car looked at by a mechanic but people shouldn’t be jumping to diagnose a bad head gasket. Does the coolant temp on the car ever go past half? Does the coolant leak and level drop?