Came across this test, it's pretty interesting information and comparisons even though it's split between two engines and a lab environment these motors reached 500k and one being on conventional oil on 10k intervals it still very impressive to say the least.
turbong
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It was an interesting test for sure but somewhat skewed IMO since conventional oil is not designed to be run at 10K change intervals so the varnish build up is actually less than I would expect from such extended change interval on conventional oil. Conventional oils are normally meant to be changed at 3K to a max of 5k miles, I would never use conventional oil in any turbo car for sure and especially not a hi po one like the mustang.
I know we have discussed this before, but I will never leave any oil in my car for 10K be it full synthetic or blended period, just cannot bring myself to do it after fixing and rebuilding engines for 50 years as a master tech and seeing the effects of poor maintenance practices. Again, that just me and my belief that oil is cheap compared to engine rebuilds. Plus I only put 6-7k miles a year on my car now that I am retired and most of it is short trips, so I change it every 3-3.5k or 6 months whichever occurs first. I just don't want the moisture, and corrosive contaminates to be sitting in the engine for more than 3k or 6 months. I also do all my own work so not having to pay labor cost just oil and filters. I don't trust anyone else to work on my cars or bikes.
BD
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It states in the video that it was run just like you would drive it in a car at varying loads and rpms so the dynos the motors were coupled to have the ability to decrease and increase loads on the engine along with rpm to simulate real world road conditions over those 500k miles.
When I worked at Harley in research and development, we had test stands that we put bikes up on that ran 24/7 that had the ability to simulate roads loads and varied rpms as well as fans that simulated the airflow over the bike proportional to the speed it was operating at up to 120 mph winds and servos that would operate the throttle, clutch and shifter per the programmed duty cycle it was running, it also had built in automated self fueling so the bikes never stopped running except for scheduled maintenance intervals or when a failure occurred. We would test bike anywhere from 100K to 250k miles per engineering requirements and test parameters.
BD
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It shows at almost the very end that the synthetic oil they used is 5W-30 extended protection but does not show if the conventional was also 5W-30, so we are left to assume that it was 5W-30 weight oil. I don't know if Valvoline is any better than any other brand oil, but it certainly isn't any worse than other. With today's technology most if not all oils are at the same quality and standards since they all have to meet set SAE spec rating to meet manufacture standards and list the standard on the bottles that they adhere to so there may be subtle differences in the amounts of additives per brand but it's still within a given range to meet the SAE specs. I don't believe any conventional oil is rated for 10K oil change intervals but have not verified it either because I don't use it in anything I own except for my lawn mower so does not matter to me.
I myself have used the motor craft synthetic blend oil since I got my eco used with 5800 miles on it, but I also change it every 3-3.5k or 6 months whichever occurs first. Just an old skool master tech from the 70s to late 90s and will not go 10K on any oil in any of my vehicles, my bikes get changed at 1.5-2K but they get run hard all the time like a race vehicle and oil is cheap compared to engine rebuilds. To each his own but I have never had any engine failures in the countless vehicle I have own over the past 50+ years so not going to change my methods now.
BD
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