I have been using Mobil one synthetic oil in my Subaru Forster since I purchased it new in the fall of 1999. I used to purchase oil filters of other companies but was not fully satisfied because of various problems that I had read about in the reviews that I frequent. I decided to check out Mobil one oil filters because I had been reading in a number of places that they had a really high quality of construction and filtering ability. I change my oil twice per year which breaks down into every 5, 000 miles or so. I am on my second Mobil One oil filter and I have to say it has shown to be good quality with fine overall results. The rubber gasket on it appears to be good quality and the outer shell of this filter is extremely solid. If there is anything I cannot stand in an oil filter it is a flimsy or weak outer shell. Some of the other makes I have used fell apart as I was in the process of removing them during an oil change. This is a quality oil filter and well worth the ten dollar cost.