Pennzoil - 04369 Ciudad de México

When motor oil was first introduced, it was sold only in monograde varieties, such as SAE-X. Multi-weight engine oils were first introduced in the 1950’s to address the issues of varying temperatures and engine operating conditions.  The first number of a multi-grade oil designates the ability for the oil to be pumped and flow at colder temperatures; the “W” stands for winter.  Thus, a 0W oil will be able to flow faster and get to critical engine components better than a 5W or a 10W oil; especially in extreme cold conditions and at engine start-up

The second number is the viscosity measurement value at engine operating conditions. This viscosity number is crucial for proper lubrication and protection of your engine.  Thus, a vehicle that recommends using a SAE 5W-20 can use a multi-grade oil SAE 0W-20; especially in colder climate regions.  Using a lower “winter” weight can help with faster oil delivery, quicker engine warm up to operating conditions and give fuel economy benefits compared to a 5W or 10W motor oil.