Is that a formulation that has worked in the past for you? Also what brand of 5w20 did you use? Was it dino, or syn?Did my first oil change to get out any material at 1300 miles..Put on a fram extended oil filter and filled up with 4 qts 5w20 and .2 qts of 0w20 mobil 1 synthetic....easy to get at filter and drain pan takes a 13 mm wrench to remove..
Motorcraft oil and filters are available at Ford dealers and Wal Mart.Also are the filters available from places like PEPBoys?
I would say QuakerState/Pennzoil, but I'm not sure. I would have to look on our computer at work, hopefully it'll say who it is.I'd be curious to know which oil refiner actually produces the Motorcraft 5w-20..anyone know?
I believe the S stands for the silicon anti-drainback valve.Motorcraft oil and filters are available at Ford dealers and Wal Mart.
Be sure that the Motorcraft filter is FL-910S, not the older FL-910 that may still be sitting on a shelf somewhere (the newer S version is required for the Fiesta (probably due to the 10,000 mile oil change interval) and may be used in other cars previously specifying the older version). If using other brand filters, be sure that they are equivalent to the S version.