They run an F-150 Raptor on a simulator machine for real world testing. Plus they have contracts with fleets and own OAI.90 Hours is about 5400 minutes so we could do a 1-year test, 5400 minutes divided by 15 is 360, so 360 days. Run the engine for 15 minutes, shut it off and start the test 24 hours later, and compare the results to this 90-hour test! Amsoil has been around since 1972, so I think they have time to do a test like this.
"Signature Series 5W-30 100% Synthetic Motor Oil was installed in a 2025 Ford* F-150 Raptor* and run through a 125,000-mile test. Oil changes were performed at 25,000-mile intervals, and power sweeps were performed before and after the 125,000-mile test protocol."