Royal Purple High Performance Street (HPS) 5w-20 $5.65/qt (12qt total) on Amazon

[Overfill]

It’s a good oil. I don’t have a UOA to compare it to and never will. It sounds as good as hpl, doesn’t use a drop, even ran really hard by an 18 yr old through the smokies with 2 friends taking turns driving to Florida. Only stopping to get gas and food. Good enough. But so was valvoline maxlife synthetic. I’ll change it when it gets dirty. If you can get it @5 a qt it’s even better.

I've yet to hear any sound, poor stories about running HPS--only good ones, honestly. If they offer it at a steal, I see no reason not to run it. Heck, at this price its worth trying IMO. Already had one coworker buy some after I told him about it.

 

[RazorsEdge]

We've used Royal Purple HPS in our 2015 Ecoboost 1.6 many times with no issues. I just put HPS in the riding mower this afternoon as well.