Long read and not the most ideal format, but well worth immersing yourself in if you're on that never ending quest for the Holy Grail of engine oils:
https://540ratblog.wordpress.com
You can also search the blog for specific brand names or other keywords:
https://540ratblog.wordpress.com
THIS BLOG CONTAINS THE MOST COMPLETE, INDEPENDENT, UNBIASED, ACCURATE AND FACTUAL, BREAKTHROUGH MOTOR OIL WEAR PROTECTION CAPABILITY TEST DATA, THAT YOU WILL EVER FIND ANYWHERE. THE INFORMATION HERE IS PROVEN, AND TRUSTED WORLDWIDE. Many people have called it the “be-all, end-all” of motor oil information, which is absolutely true, because it is the real deal.
For all the motor oil comparison data, see my Wear Protection Ranking List below in this Blog.
But, there could be some confusion for people who do not actually read my entire Blog. My test data on wear protection is generally aimed at High Performance and Racing engines that are capable of pushing motor oils near their limits. So, knowing how capable various oils truly are, can be critical. It is of course also for people who simply want to know what oils will provide the best possible wear protection for their engines, even if they don’t technically push their motor oil near its limit.
However, for ordinary daily driver vehicles, the oil used is nowhere near as critical as it is for High Performance and Racing engines. So, a normal daily driver vehicle may operate just fine for the life of the engine on say a low performing 60,000 psi motor oil. But, a High Performance or Racing engine may require a high performing 90,000 psi or higher motor oil, to avoid wear and/or damage. It just depends on how much loading the engine puts on its motor oil.
NOTE: Read my Wear Protection Ranking List carefully regarding an oil you may be considering for your application. Because some Oil Companies make changes to their oil, making them worse than they were previously, apparently to maintain or increase profit margins. So, always look for the most recent test data on oils that have both older and newer data posted. In those cases, I always indicate which oils are older and no longer available. It may be that you can no longer safely use an oil that was just fine for your needs in the past.
And the better performing the oil, the higher the reserve wear protection capability, also called margin of safety, which means capability beyond what is actually required. If you have a problem at some point, say an engine component starts to fail, or the oil level gets low, or there is an overheating condition, or you increase the power level dramatically, etc, etc, then extra reserve wear protection capability could save your engine. So, people have to decide for themselves how much wear protection capability they feel comfortable with for any given engine build. And since you have to buy oil anyway, why not select a better performing motor oil while you are at it?
You can also search the blog for specific brand names or other keywords:
Press the F3 key, or press “ctrl F“. Type in what you are looking for, in the FIND window at the top, and it will show the number of matches found, at the top. It will highlight those matches in yellow, and will take you right to the first match.