You don't need a supercharger for street use. Or recaros. Or 6piston brakes. Or any of the other performance parts ford puts on its "street" cars. So why not swap those too?
That logic is just dumb.
No sir, your rebuttals lack logic.
Why do people remove stock parts from a Mustang, install higher performing parts to make more power or handle better, but do not care if they are using an inferior lubricant? If you believe that Motorcraft 5W-50 is the best thing to use in this engine, then do not install any mods on your car. What Ford put on it from the Factory is best, right?
This thread isn't about "sufficient", it's about optimal performance. It's members like you who fail to see the difference between the two. Your comments are counter productive to other members who seek optimal part/lubricant selection for their cars, not wanting "sufficient". I fail to remember the last time I said, well....I will just buy this part because it's "good enough", especially when it comes to a $40k+ street performance car.