https://www.walmart.com/ip/Pennzoil-...SABEgIdXPD_BwE
"If 0W-40 dexos2 oil is not available,
SAE 5W-30 dexos1 full synthetic
engine oil may be used for
street use."
This seems like the best compromise to adhere to the bs dexros2 spec while keeping cost per quart down. Yes its 5w30 but they clearly say in the owners manual if you cant find 0w40 dexos2 you can supplement 5w30 dexos1. SO this above is a step above that supplement in that its dexo2 from Penzoil.