Originally Posted By: PWMDMD
Originally Posted By: Snagglefoot
If you want, you could purchase 0w20, keep all the receipts, either for DIY changes or the stealership, and then give it a shot of STP to bring the kinematic viscosity to 10.5, still within the range of 0W20. Sounds anal but doable.
Or buy the cheapest in-spec 0w-20 for the receipt and then put whatever he likes in. Want thicker? Go 0w-30 or 5w-30...
Go on Walmart.com or Amazon, purchased the correct stuff. Print Receipt. Then cancel the order... They'll never know!