I'm a newbie car owner so excuse my dumbass question please. I just got my oil changed and the Valvoline shop showed me the stick with dirty oil and recommended a $40 cleaner of some kind saying that my oil looked extra dirty. I balked and refused.
My last oil change was in late September thus I went about 6 months (only 3000 miles) between the oil change. I know I pushed it a bit there...and I live in Wisconsin.
Question: is this normal for dirty oil like this? Is it because I waited 6 months?