Originally Posted By: avi
I am doing same kind of research (2014 LC9 GM 5.3L V8 with 64k miles)
Found this:
Blackstone Laboratories has performed oil analysis on hundreds of thousands of vehicles. Recently they decided to take all this data and figure out the one question every auto enthusiast wants to know, "Which motor oil is the best?"
The answer is... they're all interchangeable so long as they meet the oil weight and certifications for your vehicle. Mobil 1, Pennzoil, Valvoline, even the discounted brands such as Walmart's Supertech and Peak will not wear your engine out any quicker than any other brand that meets the basic standards for your vehicle.
https://www.blackstone-labs.com/Newsletters/Gas-Diesel/July-1-2017.php
Quote:
So what does all of this tell us?
Well, we’re no closer to saying that one type of oil is better than another, that’s for sure. We see much more variation in wear levels from the type of engine, the time on the oil, the viscosity, the use the engine sees, etc. Whatever differences exist from oil brand to oil brand, we don’t see a lot of difference in terms of wear for most types of engines.
Now, some people report better fuel economy or other benefits from using one type of oil instead of another, and if that’s you, that’s great. Our point here is not to tell you that you should or shouldn’t use a certain type of oil, so by all means, feel free to stick with what’s working for you. All we’re saying is, if you want to try an oil that maybe costs a little less, you probably don’t need to worry about it causing any problems. Send us a sample of what you’re using, and then try a similar oil run with the new stuff – by comparing those results, you might find that you can get the same great results, and save a little money as well! Good luck!
What about rough service use case....Turbo engines where people chose to be on boost on a regular basis, or non water cooled turbo cars that people don't do 2 minute cool downs and just turn their car off when going home or into a store. I guess I would want a group 4 or group 5 oil in this case, all the 95% of the group 3 oils out there would not be the oil of choice here I would think.