Golly, where to start?
Look at the Red Line racing weights. They are advertised as two weights: a straight weight with an equivalent multi-viscosity. As Drew99GT
said, they didn’t set out to formulate a multi-viscosity oil. They formulated a straight-weight synthetic which happens to also pass some serious low-temp flow tests.
OK, to repeat, I’m not a Mobil basher but their hype is a bit much: Correction, it has been a bit much for YEARS.
Compared to the Group III pretenders out there, I do think the current Mobil 1 SuperSyn is a pretty good oil and a pretty good value for what you are actually getting. However, the advertising slogan (and that’s all it really is) “nothing outperforms Mobil 1” is a bunch of bull. And remember, they used that slogan when advertising their unimpressive, low-additive-pack SJ Tri-Synthetic.
And, unless they say specifically that it is a racing oil and NOT for highway use, it’s obviously not a true racing
oil. It looks like compromises were made when it comes to this new stuff as well. Why am I not surprised?
In short, I’d bet this new stuff is probably a tweaked version of their current formula. Maybe a boost in ester content? Maybe a formula similar to German Castrol 0W30?
--- Bror Jace