Is 10w 40 too thick?
Multi-grade oils could stay as close to the optimum viscosity over a range of temperatures – not too thick when it is cold and not too thin when it is hot.
The difference between 10W-30 and a 10W-40 is the high temperature viscosity.
Obviously, a 10W-40 is thicker than a 10W-30 at high temperature..
What oil grade numbers mean?
The Society of Automotive Engineers (SAE) developed a scale for both engine (motor oil grades) and transmission oils. … This number represents the oil’s resistance to thinning at high temperatures. For example, 10W-30 oil will thin out at higher temperatures faster than 10W-40 will.
Is it OK to mix oil brands?
Even if two different brands of oil have the same viscosity, you still should not be mixing them together. … Technically, using a grade of oil that’s recommended by your car manufacturer is correct. However, if you combine two different brands of motor oil, you could be at risk of damage.
Is mixing brands of motor oil bad?
Switching brands is not harmful to your engine as long as you choose an oil marked with the API donut of the same level, e.g., API SN. Motor oil manufacturers must meet minimum industry standards for performance and compatibility of the API mark.
Can you mix different brands of oil paint?
Answer: Yes, it’s perfectly acceptable to mix different brands. In fact, most professional artists use more than one brand of paint because they’ve discovered particular colors they like by various brands through experimentation. … Most paint brands use linseed oil as the pigment binder, while M.
Is it okay to mix 5w30 with 10w40?
As posted above, mixing 5w30 with 10w40 will give you an oil that performs somewhat better in the cold than 10w40, but less good cold than 5w30, and that has a viscosity a bit higher than 5w30 but a bit lower than 10w40.
Can I mix synthetic and regular oil?
The short answer is… yes. If you don’t have a choice, adding synthetic oil to regular oil can help you out in a pinch.
Can I mix 2 different engine oils?
The good news is that mixing different types of oil it will not harm your engine in any way in the short run. Most synthetic and semi-synthetic engine oils are based on regular oil and are compatible. … Now, as far as different grades are concerned, mixing between them isn’t something that will damage your engine either.