Looking to switch, not sure what my car came with from the assembly line (ow20 full synthetic) but it had sat on the lot with this oil for a year, I put 492 miles on the clock before changing it to mobile 1 economy full synthetic from walmart with a napa gold filter. The next 2 oil changes have been done every 3400 miles as recommended severe OCI, I will extend to 5k (oci 7500) during the summer months, dealership uses Castrol Edge Full synthetic 0w20. I plan to switch to eneos 0w20 soon from my local Napa, it is cheap 28.00 1 gallon and I think it is close to the best I can buy. Is there any better oil I can get for this price? Is anyone using eneos?http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/Motor-Oil-Eneos-Fully-Synthetic-0W20-1-Gal-3-765L-/_/R-AOR3230310_0466858901