Last week we explained the basics of motor oil ... According to Zhang, there are small, medium and long hydrocarbon chains. Synthetic oil is comprised of only medium-length molecules.

Since Amsoil motor oil is less likely to thicken ... Valvoline is a significant producer of synthetic, synthetic blends, high mileage, heavy duty, small engine, and performance motor oils.

It is developed specifically for severe duty fleets hauling heavy loads, stop and go deliveries, or operations where there is a high level of airborne particulates. Recommended for most diesel ...

These oil grades resist the breakdown associated with higher temperatures to allow adequate flow and lubrication of critical engine components. Fully synthetic and synthetic blend engine oils ...