Next week I'm changing the oil on a neighbor's car, 6 months ago when I changed it I put in 0W20 Castrol Magnatec, with a Motorcraft filter, she has an extended warranty on it.. This past oil change, she ran about 6,000 miles. She wants to run 10,000 miles this time. So I'm thinking Castrol Edge or Mobil 1 but which filter would you recommend.