Seems like most of the A3/B4 oils carrying MB229.5 in 0W30/0W40, and 5W30/5W40, I really view them as being the same grade it's like they're formulated targeting and a certain HTHS with volatility below 10% which results in a final product that has a KV100 right on the edge of 30 or 40 grade.I wonder if the thinning is "baked into the formula" or if this wasn't anticipated to happen so soon into an interval by Shell.