The 10w20 Euro has a just barely higher operating viscosity, but a lower HTHS, which means MPG would possibly be just a hair better. Over the life of an engine, the higher HTHS has the potential to result in lower wear, but considering its HPL, the add pack likely would result in almost identical wear. But that part is just my speculation. The lower HTHS stuff is well-proven, though.quick questions folks, why would anyone pick no Vii euro 10w20 over no Vii euro 5w20?
As spasm mentioned, the higher winter number (and lower viscosity index) are good indicators that Noack volatility will almost certainly be lower.