I switched over a 4cyl Camry at approx 130k. First two OCI's were real dirty, changed at 5k. Use of extended range filters really helped with all the sludge that breaks free. During the second OCI oil consumption went down dramatically. At 165k now, can go 10k, stays fairly clean. Probably should do a UOA to verify 10k's ok for this car, but so far so good. Using recommended weight, burns 1/2 qt every 5k, was 1 quart every 3k on dino.