I did post a message before about going cross country. I luckily got an internship with Toyota for this summer out in California and have decided to drive out there for a six month stay. I figure 80% of the miles I put on my car will be highway miles so I figure that I may not change my oil until I get back. I estimate I will put close to 10,000 miles on the odometer when it is all said and done. I have bought a Toyo-Roki oil filter for my Integra and 5 quarts of GC 0w-30. I was wondering if M1 0w-40 would be a better choice for the task. I have seen many UOA's and both seem to do well for the long haul. What you do guys think?