Engine Oil Specs.7z May 2026

This represents the oil's resistance to flow at operating temperature (212°F / 100°C). A higher number means a "thicker" oil film, which provides more protection for hard-working or older engines. 2. Performance Categories (The Letters)

Many manufacturers have their own "house" specs that go beyond general API or ACEA standards. If you own a European car, look for codes like: BMW Longlife-01 Mercedes-Benz MB 229.5 GM dexos1™ or dexos2™ (common for Chevys and GMCs) Quick Tips for Choosing: engine oil specs.7z

The most common spec is the SAE (Society of Automotive Engineers) grade, like . This represents the oil's resistance to flow at

The "W" stands for Winter. This number indicates how well the oil flows at cold temperatures. A lower number (0W or 5W) means the oil stays thinner in the cold, helping your engine start more easily in winter. This number indicates how well the oil flows

A mix of both. It offers better protection than conventional but at a lower price point than full synthetic. 4. OEM Approvals (Manufacturer Specs)