My mysteries regarding Mobil 1 European Car Formula have been cleared up, but not in the way I was hoping for.
A follow up to my article on Thursday about how automakers give different oil recommendations for the same car on different continents.
Why were we told not to use 5w-40 oil? And why would you want to? The devil, as it usually does, lies in the details. And this is far from the first time this has happened.