Originally Posted by njohnson
I don't think Shell means it this way with the marketing, but, when I see them come out with an oil like this, it is as if they are saying that their other synthetic pcmo oils, Pennzoil Platinum, Ultra, Quakerstate Ultimate Durability is designed for cars and SUVs and trucks that are used to haul people around and is not robust enough for hard working trucks that tow and haul heavy loads. Are their other oils not up to the task? Is Shell, in a roundabout way, admitting that they don't provide adequate protection when working trucks hard? If they do provide enough wear protection, then, this is fine marketing.
Another thing is, when trucks are worked hard, their engines generate more heat. Shell most likely boosted the amount of antioxidant to help keep the oil from oxidizing as quickly from the high heat.
That is what Mobil did with their 5W-30 Truck and SUV formula years ago. When asked what was different about it, Mobil said they had increased the amount of antioxidant, which helps when trucks and SUVs tow loads. I think I remember reading that on their website.
The original M1 Truck & SUV 5W40 (CI-4+ & CI-4) was Delvac 1, for about half the price (at WM) as D1 was at the truck stops, used a fair amount in the older Cummins Ram. Unfortunately Mobil eventually watered it down somewhat & then made it TDT. This Shell offering has wait & see written all over it, when I see VOAs that showing it outperforming Magnatec 5W30 in demanding Ecoboost applications, then I'll believe it's for real.