Hey I got a fresh b20 motors I was wondering what oil am I suppose
To use synthetic or regular oil

 

Theres really no specific oil you "have to" use, but if it is "fresh" as in just rebuilt, use non synthetic for the break in period, then after use synthetic. But if it isn't rebuilt, I'm sure the previous owner used synthetic, so you want to continue to use synthetic. I recommend mobile 1. They used to be about the only "fully" synthetic oil, but have kinda downgraded and aren't "fully" synthetic anymore, but still better than most synthetics on the market.