pawjr74 wrote:I stick to the 3,750 mile interval. I don't ever want to run into an issue with the warranty and have them say the oil wasn't changed at the correct interval according to the manufacturers recomendation.
This is exactly what we do and why. We tow quite a bit, so we are definately in the severe duty category. I stick to Mobil 1 in the exact factory grade.
If we didn't tow or use the PF so hard, 7,500 would probably be fine. I can tell you that our Maxima, which has a VQ30, has had a steady diet of Mobil 1 at the factory 7,500 mile intervals. Now at 163k, it runs just like new.