ok so i decided to start my car today it had been about a month since the last time i did it, and well since it was nice out i pulled it out of the garage. well when i got it out of the garage i noticed there was a small puddle of oil where it had been parked, i never noticed it leaking oil prior to me storing it for the winter, also there was a decent amount of smoke coming from the exhaust. is this stuff normal for storing cars in colder climates.