Home Tips & Tricks How to Mix Different Weights of Motor Oil

How to Mix Different Weights of Motor Oil


Motor oil is an essential ingredient in keeping your engine running smoothly and efficiently. Oil manufacturers make all sorts of oils, varying in weight and viscosity. Depending on your vehicle type, and the climate in which you drive, you may need a special blend of motor oil to suit your application. Mixing different types and weights of oil can help you make the perfect custom oil for your engine.

Things You’ll Need: Motor oil (two types or weights), Large container, Stirring stick


  • Pick out two types of engine oil that you would like to blend. For example, try mixing a 10W-30 and a 5W-20 type of oil. You can also mix synthetic oils with mineral oils if you prefer. Pour both oil types into a large mixing container. Make sure the mixing container has enough room for at least two quarts, unless you are mixing larger quantities.