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.
If your car has over 75,000 miles, look for "High Mileage" versions which contain seal conditioners to prevent leaks. gasoline differences? engine oil specs.7z
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: The "W" stands for Winter
Always prioritize what the manufacturer recommends. Using the wrong viscosity can lead to poor fuel economy or engine wear. If your car has over 75,000 miles, look
You’ll see the symbol on bottles that meet GF-6 standards. These oils focus heavily on fuel economy and emission system protection. ACEA (European Automobile Manufacturers' Association):
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)
Chemically engineered for better stability. It handles extreme heat better, flows better in cold, and lasts longer.
