Question about 1991 Cadillac DeVille
Changed plugs, air filter, & o2 sensor
Old car, when rings begin to wear oil leaks into the combustion chamber burning more oil and reducing mpg try a product called restore and use it at every oil change also make sure you dont have black oil and that you are changing the oil at regular itervels also plugs wires roter cap and fuel filter and air filter are changed any abuse to these areas will reduce engine life i change my 350000 mile car every 500 miles reusing my filter everyother time
Posted on Jun 02, 2009
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Posted on Jan 02, 2017
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