If you have the 3.5L engine then it will burn oil no matter what. Just the nature of the beast. BUT!!! Many VQ35 owners reported reduced oil consumption and (in some cases, not all) slightly quieter engine by simply switching to 0W40/5W40 engine oils, with Mobil1 0w40 and Rotella t6 5w40 being the crowd favorites. The quiet part is usually mostly noticed at idle, or upon heavy acceleration, or towing. "Less of a sewing machine noise" as some of those posters on Nissan forums say. May be worth a shot, if it doesn't work withing a couple oil changes - you can always switch to $12/5qt Supertech 5w30 or 10w30 from Wal-Mart, or maybe even 10w40, as these engines seem to benefit the most from 40wt oils.