What kind of engine oil is best for the new Bora?

[Tyler]

The Volkswagen Bora originally uses semi-synthetic engine oil with the specification SM-5W-40, which is considered good. Methods to determine the quality of engine oil are: 1. Hand-rubbing method: Rub the lubricating oil repeatedly between the thumb and index finger. Good lubricating oil should feel smooth, with minimal debris and no friction. If you feel significant friction like sand particles between your fingers, it indicates the lubricating oil contains many impurities and should be replaced with new oil. 2. Light inspection method: Use a screwdriver to lift the lubricating oil at a 45-degree angle to the horizontal plane. Compare it under sunlight. Under light, you can clearly see if the lubricating oil is free of debris, which is good and can continue to be used. If there is excessive debris, the lubricating oil should be replaced. 3. Oil stain method: Take a clean white filter paper and drop a few drops of oil on it. After the lubricating oil seeps through, if there are black powders on the surface and it feels rough to the touch, it means the lubricating oil contains many impurities. Good lubricating oil will have no powders, feel dry and smooth to the touch, and leave a yellow stain.