Can an oil change improve gas mileage?

+1 vote
asked Jul 12, 2018 in Repairs/Maintenance by RalpStac (290 points)
Can an oil change improve gas mileage?

Can changing the engine oil in your car improve your gas mileage?

1 Answer

0 votes
answered Jul 12, 2018 by Shelde (12,300 points)
When you engines oil is dirty and has sludge built up in it then it can affect the engines performance which can cause your engine to lose a little fuel economy.

So changing your engine oil can help improve your gas mileage somewhat but changing the engine oil won't make a huge difference in fuel mileage.

Other things that can improve your fuel mileage are properly inflated tires, new spark plugs, spark plug wires ignition coils and not speeding.

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