So ... how many different types of wrenches are there for an F800 oil filter? Thus far I have found at least three different types, all the same size 76mm, but with different "teeth" for different brands of filter wrenches. This oil changing stuff is gonna get expensive in a hurry if I have to buy one of each in order to be able to remove any filter. Had two oil changes by the dealer and each time they installed a different type of filter--they likely don't care about different wrenches cuz they have 'em all--and when I went to buy a filter at a parts place, the different brands required different wrenches. What's the solution?