Hey guys I'm new to the forum but I've followed the site for a while now looking for reviews and tests and whatnot and figured I would finally ask what I've wanted to know. My toy is a 2004 honda civic si with the factory anemic k20a3 engine, now I've owner the car since new, and now she's tipping just under 160,000 miles. And that's not the kicker. It's been pushing out 3x it's stock wheel horsepower for about 70,000 of those miles and still running strong and not consuming any oil one bit, not through the cartridge seals in the turbine or anything. I've been running rotella t6 for the last few years with an oil change once per month, I know that's alot of oil changes but I drive this car HARD. Very hard. The usual mileage intervals are about 2200 miles give or take 100. But like with my car I'm always looking for room for improvement, this there another w40 wether it be 5w40 or 0w40 that would work better for me? I work for Chrysler and I just say pennzoil has an ultra 0w40, but like I said you guys know 8193002x more than me, so I'd love to hear some input and info! Thanks!