Drain the oil, fire it up, run it at WOT under load for 10 seconds. Then drive it around for another 5 to ten minutes. See how that works out.
Why would I want to do that? Intentionally abuse it?
You alluding to a PROBLEM with your engine above, that you DIDN'T KNOW ABOUT with the oil pick-up. You are ASSUMING it was the Lucas that "saved it". However, you didn't know about the problem when it happened.
That's a very different ball of wax then suggesting somebody fire up an engine that hasn't run in four years and go WOT with it for the heck of it. They aren't even in the same ballpark.
There is nothing magical about Lucas. It is a heavy group I oil with next to no additives in it. Group I is very polar, which is why it behaves the way it does. However, a properly blended oil has anti-foaming agents, AW additives and a host of other goodies to make it perform to a "spec". Lucas doesn't perform to a spec because it is an additive, there are no spec's that it is required to meet.
There was a poster recently who mentioned driving his BMW 9 miles with no coolant in it on Mobil 1. No Lucas, and the engine was fine.
We can all pull anecdotes out of our behinds as to how well X or Y product has helped us, but without any actual data to back them up, that is all they are: anecdotes. And you don't know if the remaining ZDDP from the oil you were running (VR-1) would have protected you just as well by itself if you hadn't been running the Lucas.
I'm NOT trying to belittle your experience with the product, so please don't take it that way. I'm simply saying that we KNOW what Lucas "is" on this site, and subsequently there is a pretty good understanding of what the product is ACTUALLY capable of doing.
If you want to keep running it, that is your choice, and I'm not trying to change that.