Richmcm wrote:
Change the oil in our E450 Winnebago Aspect in our driveway like many others. I use Mobil 1 full synthetic and change at 3000 mile intervals. I also lube the zerk fittings every other oil, change at a minimum. I have also installed a quick valve which makes the whole process easy. If you have the room the E450 is simple to change the oil. The filter is right there.
You may want to send some of your oil in for analysis. 3000 miles on Mobil 1 is a pretty short interval. Use of syn generally affords longer oil change intervals.