Can I use 10W 40 instead of 5w30?
If your car’s recommendations say to use 10w-30 that means you should not use 5w-40 because it acts in a different way whether at cold or at operating temperature. The first numbers 10W and 5W are referring to viscosity at cold so that the lower the number is the thinner the oil is at cold and vice versa.
Can you mix 10W 30 with 15W 40?
You can mix them with no problem. Read on the internet where a guy blow up his car doing that. you can mix the two without a problem, for Wisconsin, the 15w 40 would be a better oil in the summer and 10w 30 would be a better oil for the winter, if you drive the car in the winter!
Can you mix 5w30 and 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. Mixing different oils will not improve the performance or efficiency of the engine in any way.
Which oil is thicker 5W30 or 10w40?
5w30 is less viscous while 10w40 is more viscous. The 5w30 has a viscosity of 30 at high temperature while a 10w40 has a 40 viscosity at high temperatures. When at high temperatures, the 5w30 oil becomes thinner than the 10w40 oil since 30 is lower as compared to 40.
When should I use 10w40 oil?
Using the correct viscosity oil eases starting, reduces friction, and slows wear. For even more effective start-up protection, use a synthetic 10W-40 instead of a conventional 20W-50. The synthetic 10W-40 flows easily and still maintains enough viscosity to protect piston skirts and bearings when it gets hot.
Is 10W40 better than 5w30?
The difference is in the viscosity of each at different temperatures. The 5w30 oil will flow better at low temperatures than the 10w40 oil. This means that the 5w30 oil will protect the engine better at low temperatures, usually when the engine is just starting or during weather conditions such as winter.