Just saw Valvoline 5W30 synthetic oil designed for "modern engines" of 2012 or newer for $34.00 per 5 qrt. jug at WM ... *That seems high for a DEXOS1 Gen 2 oil : It's supposed to prevent intake valve carbon deposits but it has a NOACK of 11 ! It's also a KV100 cSt rating of 9.8 for 5W30 which is a low 30 weight oil for sure ... Not sure what is so special about this oil as compared to PP 5W30 DEXOS1 Gen 2 for $25.00 per 5 qrt. jug ?