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Clogged air and oil filters waste gas
Inspect and replace the air filter in your car. A clogged air filter can reduce your gas mileage and cause higher emissions. Your air filter should be changed every 25,000 km (15,000 miles) or more often if you are in a dusty area.
Change the oil and oil filter in your car. It will reduce damage to your engine and reduce fuel consumption. For Canadian road and climate conditions, the average time between oil changes should be every three months or 5000 km (3000 miles). Using oil with the label "Energy Conserving" can also reduce your fuel consumption
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