Changed mine out yesterday for the second time. First at 1K and then at 6K. Went with OEM Motorcraft Blend 5w-20 and their filter. At 10K going over to Pennzoil Syn. I usually was a RP guy, run it in my truck and cycles, but sick of driving to a Pep Boys, Pennzoil is right around corner and comes in 5L jug. Damn the undercarriage oil filter!!!!!!