just wanting some input about a slow cold start issue. its not real bad it just dont pop off when the oil is cold. once its warm everything is normal. seems like high pressure oil might be bleading off?
that o- ring was an update and it keeps the fuel /water from bypassing if the filter clogsAnd since they are patented the other aftermarket filters aren't exactly the same and don't quite work exactly as Ford intended their filters to work. For example, the fuel filter(frame rail one) that comes from Fram doesn't have the O ring that the Motorcraft filter does(Patent). This O ring acts as the water/fuel seperator. l. Good Luck.