Quote:
Originally Posted by Cd
So if I were to run an engine with new oil, versus old oil, the emissions will be worse with the old oil ?
So if I understand correctly, an engine will produce more emissions once additives in the oil are used up ?
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New vs old oil does not affect the emissions. New vs worn engine does affect the emissions.
Old oil has dirt in it. That dirt acts like grinding compound and causes engine parts to wear out faster. When the additives are used up, blowby reacts with the oil to make acid, which also causes engine parts to wear faster.
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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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