my big question was....what is the difference between the regular, normal fuel filter that we all use and the Bosch extra high filter that is apparently matched by the Mann filter? Is it for better filtering as in a 3rd world country? For use if you buy from discount gas stations instead of "top tier' gas stations (including Costco discount gas, which is top tier), or what?
As far as NAPA, I don't know anything bad about WIX, but I do know parts from Autozone, O Reily, and Advance are often much higher than e-euro, Rock Auto, and even IPD, and typically names I have never heard of. And, often trying to get a Volvo part from Autozone, etc. requires special order and two day delay, which puts it competing with my normal Volvo suppliers in delivery time but at a higher price. Check the price on the fuel pump relay under the glove box.....tremendous differences. Thanks!