Additives represent 15 to 20 percent of a gallon of oil with the balance being high-quality base oil. Additive packages play a key role in helping to keep an engine clean and protected from varnish ...
Before understanding the concept of engine oil sludge, it is important to know what the oil does inside the engine. Easy, it lubricates. But it does not end there. It lubricates: The main work of ...
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