So, I will tell a RP story.
About 30 years ago, I was in a place on Ft. Bragg called "Area J". It was a training area for various units, and a common place for those to whom were brave and dumb enough to venture, as it was against the rules. Anyway, I was cruising around in the sand and water and hills in my YJ, 2.5l, and all upon a sudden, I hit a big "bump" in the trail at speed, maybe 25 or so. Going slightly airborne.
Because I was so smart as a young man, I decided to do this a couple more times, as it was fun, and what could go wrong? Well, on my last attempt, I decided to go the opposite direction as I had before, which was a mistake. The bump was angled differently on that side, and my front end went in the air probably 5 ft or more, all I could see was sky. When I landed, the shifter when to side, and I could smell oil.....
I turned off the engine and looked under the hood, and the engine mount on the oil filter side had broke, crushing the oil filter.
As I said before, I was smart as a young man, and knew that I was in trouble if I got caught out there. So, I decided to drive the jeep out. It was near 4 miles back to the main road, in the sand and mud in 4wd, with a little 2.5 Jeep engine. things when well, until the engine locked up, about 10 seconds after I got on the main road.
The oil I was using was RP, the older kind, non API, I suppose like HPS of today.
4 miles with no flowing oil, in summer heat, in 4wd, off-road, on just oil film.
Now I dont know if it was the Royal Purple that made it last that long, under those conditions or not, but it is a good story nonetheless, well maybe..........
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I have no issues with Royal Purple, and I use some of their products.
If we didn't do dumb stuff we wouldn't have awesome stories to tell.