Ron, you really did misinterpret my original message. However, I would like to address once again the subject of motor oil testing. These companies are very good at measuring viscosity, lubricity, contamination and chemical breakdown of motor oils. They are not, however, authorities on what lubrication material and schedule is required for a particular engine. It is the engine manufacturer who spends millions to answer that question. It may be worthwhile to measure BRP oil against other brands to see which has better characteristics and maintains these characteristics for longer periods of time. That data doesn't necessarily indicate whether a particular oil is good enough to protect the engine until everything else about the vehicle wears out. The worst of the lot maybe just as good as the best based on that criterion. What else matters other than price?
I understand what you're saying. Companies do spend a lot of money on engineering and testing. And you would think that testing the oil samples would simply confirm that the recommended lubricant is holding up just fine.
The problem is that there is unbiased evidence that this may not be the case.
If an oil shears to 1/2 it's rated viscosity, 3,000 miles short of the recommended service interval, why does that not indicate a lubrication issue when it certainly would in any other application.
Are you saying that BRP feels a 20 weight or lower viscosity oil will provide adequate lubrication? I suppose this is possible. But I know of no other internal combustion engine that would tolerate (over time) this much loss in viscosity. I know viscosity is only 1 aspect. But it is a pretty important one. That's why viscosity numbers are so prominently marked on the label. And why there are cries of 'Foul' whenever a manufacturer allows their product to deviate very far from the claimed viscosity.
One of the biggest contributors to the cost of a lubricant is engineering in the ability to maintain its rated viscosity. Maintaining the rated viscosity is one of the most difficult duties of any lubricant. And, one of the most important.
Typically, as the Viscosity numbers go, so go most if not all the other attributes of a lubricant. In other words. You usually get bad numbers across the board or good numbers across the board. The worse the numbers, the more likely you'll start to see evidence of hard parts being worn away.
While I agree that there may be something I am missing. I don't think there is any witch hunt to find a problem that isn't there. So far the numbers seem to be pretty consistent from one test to the next, and they are nothing to write home about, (though I admit, there have been only a few).
Since there are better lubricants available that meet and exceed all the BRP specs. which are producing more favorable test results, it does seem to present a compelling case to me for bumping up the quality of lubricant.
Just my perspective. There are many others. Bottom line, everyone takes their chosen route. As long as it's a discussion and not an argument, we all profit.