I have an oil change plan which allows me to get my oil changed at 3000 mi. They use syn oil. Last time I went to a local Dodge/Jeep dealer I am pretty sure they did not change the filter and the oil looked a bit dark. This is where I have to go and wondering what to do now as I suspect their procedure. I do plan to mark the filter housing in a way that I will be able to tell if it has been removed. BTW this is a 2019 JGC.