What do the numbers in the motor oil actually means?

      Every time I went to service my car, I always get confused by the numbers on the motor oil packaging. There are 5W-30, 10W-30, 10W-40, etc. So what does these numbers means? And what is the W stands for? Finally, I found out that the W stands for Winter and the first number before the W indicates how well the oil will perform in cold temperature. So, the lower the first number is, the better the oil will perform in cold temperature. What about the second number then? It is actually just the opposite from the first number. The second number indicates how well the oil will perform in hot temperature. The higher the second number is, the better the oil will perform in hot temperature.
      So, the next questions is, why all these matters? It matters because oil thickened in cold temperature and gets thinner in hot temperature. You don’t want the oil to get too thick when operating in cold temperature as it can damage the engine. On the other hands, oil get thin and burn in hot temperature, also causing damage to the engine. Liqui Moly motor oils are manufactured with the right formulation to give the oil the best performance in cold or hot temperature. By using Liqui Moly products, repair cost can be minimized while car performance can be maximized.

      Now you all know about the numbers in those motor oil bottles. So, you can choose the right oil for your vehicle. Remember to always drive safely!