SWEPCO 502 PREMIUM ENGINE OIL IMPROVER
There is an often-heard statement that, “All engine oils are the same, any old oil will work!” and that is far from the truth. Today’s engine oils must pass a variety of physical, chemical, and engine tests to qualify as an engine oil. This is especially true for the modern fuel injected, compact, and exhaust modified engines. There many good oils, a few technology advanced high-performance oils, and a few you read about in the news for being obsolete [...]