I did my first change at about 1250 miles. I refilled using the Nissan ester oil, and used a Mobil 1 number 110 filter which is slightly larger than the standard size. At about 5050 miles, I changed again to Redline 5W30 synthetic and a new Mobil 1 filter. My plan is to stick with Redline and 5K OCI's. The VQ37 engine, as we all know runs hot and a premium oil is important. While I have used dino oil like Pennzoil yellow bottle and Castrol GTX with good results in other cars for the last 30+ years. I wouldn't run anything except a good synthetic in the 370Z. The Nissan ester oil cost about $12 per qt. plus tax at the dealer, I bought a case of Redline for about $10 per quart delivered to my house. That was an easy decision to make.
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