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Power to a positive displacement pump is Hp = GPM X PSI / 1714. That's the theoretical power at 100% efficiency. Divide by efficiency to get actual shaft horsepower.
If you measure flow rate at some RPM, and find the drive ratio of the pump (pump RPM vs engine RPM), then you can calculate oil pump horsepower as a function of engine RPM and oil pressure. That would be interesting information.
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06 Canyon: The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.
22 Maverick: Summer 2022 burned 62.74 gallons in 3145.1 miles for 50.1 MPG. Winter 2023-2024 - 2416.7 miles, 58.66 gallons for 41 MPG.
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