Engine oil Castrol or MOTUL
I would say 0w20 Motul 8100 is a solid choice.
I use Motul's 0w-20 "Eco-lite" and change about every 4-5 (or April-October really) with about 25 autocrosses and the highway driving to get to them.
I use Motul 300v 0w20, plus oil analysis from Blackstone Labs, currently every 6k miles until they tell me otherwise
Castrol Power 1 ultimate is great and cheaper too.
but real talk: Castrol GTX Synthetic 10w40 in Tennessee summers and 5w40 in winter.
5W30 Castrol edge full synthetic
Motul 8100 5w-30
Castrol Syntec 5W-30, because of this: [https://my350z.com/forum/engine-and-drivetrain/258663-vq-oil-analysis-and-info.html](https://my350z.com/forum/engine-and-drivetrain/258663-vq-oil-analysis-and-info.html)
Between it and the Castrol Syntec 0W-30 it has less wear indicators in the oil than any other brand, at any other weight.
Redline and motul are the best but I’ve been running catrol for 50k+.
I've used mobil 1 20-50 for the last three oil changes and had really bad ticking noise from the head. This last oil change I used casterol GTX and have had a lot less ticking since. I'm no longer sold on mobil 1 for the rocco.
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