I have always heard that the low number is the important one. I use Motorcraft filters and have never had a problem. I also use Motorcraft synthetic blend oil. Good bang for the buck. I have used Mobil one 5-20 in the past and the motor did seem to be a little smoother. Other than that I did not notice any other difference. I still got the same gas milage and the power felt the same. (So if it is for free, it is for me) that what I say.
well it would be hella sweet to actually have a noticable difference from the switch . is it possible ? i mean im pretty sure this cars never ran synthetic and its at 79,000 now
Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat