I have this motor. At around 60k I noticed the oil consumption went way up. I was using about a quart every 1200 miles. The warranty extension states I must use MORE than a quart every 1200 miles. The warranty extension is for 10 years. I happened to switch to synthetic around that time, due to living in Minnesota and realizing I would improve winter starting. From 60k to about 90 k miles I have been dumping in a quart every 1200 miles. In the last 6 months though, it seems the oil consumption has dropped. I am unsure if the synthetic did it, but it is better. I think around a quart every 2000. Maybe in a design where the oil is hanging up in the oil control rings (too small holes), synthetic flows better. I don't know.