How many engine filters are there actually on a m11 engine. When i take it in to a professional, it seems they miss one all the time...
One oil filter, a pre fuel filter, secondary fuel filter and one coolant filter. The coach came with a
Winns pre filter but many have been change out for something else.
Let us know which "profesional" so we can cross him off the list.
Don't forget the air filter, but know it doesn't need to be changed every time you change the oil.