is there a cold tempature limit on using your boat? like if its 20 degrees outside, could you damage your outboard when you start it? my father-in-law told me today that if i start my motor when its freezing outside it will trash the water impeller. is that true? after he told me that i said that i would just take out my jet boat. he said that would be an even bigger mistake because it is oil injected. he says that the oil would be too thick and wouldn't reach the engines properly. is he just blowing smoke or is he right?