Change Your Spark Plugs Early
Change your spark plugs BEFORE they're due. Most drivers think their spark plugs last well over 100K miles. That's true for some engines, but not all. In fact, if you own a car with a turbocharger, chances are you should be replacing your spark plugs every 30,000 miles. Refer to your car's maintenance guide for the recommended interval for your particular engine. Even then, it's never a good idea to squeeze the last drop of life out of your spark plugs. Here's why. If your 100,000-mile spark plugs have 80,000 miles on them, they’re 80 percent worn. Misfires and incomplete
combustion occur more frequently during that last 20,000 miles, costing youalmost $450 in wasted fuel. You have to replace your spark plugs anyway, so do it early and pocket the savings. Even if you have to replace the plugs one extra time over the life of your car, you’ll still come out way ahead. Get the full how-to on changing spark plugs here.