Keeping our cars in top running condition depends on a regular schedule of maintenance that includes changing the oil and using the correct motor oil. But what do we know about engine oil or bulk motor oil in general?

The Society of Automotive Engineers, SAE, established a numerical grading system for classifying bulk motor oil and motor oil standards based on the viscosity characteristics. This systems is where we get the classifications of bulk motor oil that includes 20, 50, 5w50 and others. Using the correct type and amount of oil in your car is important. If you use too little oil in your car, it can cause excessively high oil temperatures because heat from the engine is more concentrated. If you use too much bulk

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