2012 Model Will Have OIl Cooler

11Thumper

I have a few questions. Not picking bones with anyone, just want to understand this a little better.

1. Didn't Nissan implement the "limp mode" because they switched to a new "green" bearing material in our engines? I thought I read it someplace and it's possible the limp mode was created as a result of that (material specifications), nothing more.

2. Manufacturing tolerances (especially these days) should be tight enough where variances should not cause engines to operate vastly different from one another. While break-in procedures can vary widely, could that really cause an alteration of the engine's ability to run at normal temperatures?

3. In the case of the owner who has owned both an '09 and '11 model. I'm curious if the '11 model is running higher oil temps because the engine is still fairly new. Has anyone experienced reduced oil temperatures after ~25k miles of usage?

Yesterday I drove from San Jose to San Francisco (about 50 miles) on the freeway in moderate temps and light traffic. My speed was set at 68mph (lots of LEOs around so used cruise control) and I was running pretty steady at 210 degrees the entire time. To me that seems fairly reasonable, however if I get on the car hard it doesn't take long to get up to 240-250 degrees. I've never pushed it over 260 degrees before.