On previous cold mornings my truck would burn some oil for about 5-10 seconds after I started it up. This morning I let it warm up for almost 10 minutes, but it still smoked for a minute down the road. Is this natural for diesels? I've heard they don't like cold weather, but why would they burn oil?
Does using the block heater reduce the amount of oil burned?
and if so...
How long is a good time to have it plugged in?