Related to this topic of sky high parts. I have a 2016 (1/2) that I have been using moly oil in since new. When I took it in for oil change in April I didn't pay attention to what the cost would be until checkout. They charged me 20 and change for the oil. Did wonder why bill was so high, but too late to do anything about it. So recently got a card from dealership saying I could get oil change using synthetic oil, rotation of tires, etc. for $55. I have no idea which synthetic they will use, but a huge difference in price. So is it a good idea to switch to their synthetic?