I have a F-350 with a V10 engine. The engine is new with 4600 miles. I did an oil change at 1000 miles using Pennzoil Ultra. I will be taking a trip pulling a toy hauler loaded with six bikes and all the needed equipment. So my question is with 3600 miles on the current oil change should I change the oil now or wait until I get back from the trip? Cost and saving money is not my concern as much as doing what is best for the engine. Thank you for any feedback!