This whole knock on Royal purple is laughable at best. Their big box oil is no worse than anything else and priced almost the same outside of supertech, which many here will scream from the rooftops how great it is. Meanwhile Walmarts fuel and lube philosophy is “lowest bidder”, yet everyone seems just fine with that! Their HPS and XPR line up is as good as any other top tier oils and priced better. This whole rip is getting downright ridiculous! My nephews a bridge builder and they worked with a royal purple rep and cut rebuilds down by 3 on heavy equipment. If you don’t like the color purple I get it but don’t talk out of your rear about unsubstantiated claims. I don’t like HPL charging a kings ransom for oil they won’t spend money on to at least get the starburst symbol for. I still use it but don’t agree with that side of it.