I purchased the truck in my sig w/ ~ 12k miles. The oil was changed by the dealer at that time. I ran the truck 5k miles w/ no oil loss. Dealer changed the oil at 17k miles. I'm now ~ 4k miles into this oil change and the truck has "consumed" 1 qt of oil. There are no leaks or blue smoke. Where is the oil going? It just seems odd to me that the truck would all of a sudden use oil like this when it has 20k miles. I’m worried what to expect in the near future.