Posted: Mar 18 2010 at 3:17pm | IP Logged

Remeber, a lot of vehicles come with syn from the factory.  Corvette, Porsche, Mercedes, Viper, etc all have syn as a factory fill.  Rings are now different than they used to be and seating them isn't the issue it used to be.  I changed my 2007 Fronty over to Mobil 1 at about 1100 miles.  At 27,000 it can run 400+ ,iles and the oil is still at the full line on the dipstick.

I also think that the VQ engines like a tad thicker oil so don't try running a 5W-20 or 0W-20 oil in it.

Posted: Mar 19 2010 at 7:58pm | IP Logged

Frontierguy, Yes, I meant 4000!  My typing is not the best.  I use Mobil 1 5W-30 EP and change it at about 4-5000 miles because it is still under warranty.  After warranty, I'll go 8-10,000 miles.  I also use a NAPA Gold or Pure One filter.  I cut open a Chinese made OEM Nissan filter and did not like the construction.  I also get less start up noise with the non-OEM filters. With the PureOne in particular my oil looks like a dark honey color at 5000 miles!  Amazing to me.

Have you ever gone to Bobistheoilguy.com and read the forums on oil.  Lots of retired oil chemists on there and they do like Amsoil!