Is it OK to use 10W40 instead of 5W20?

You can let it cool off enough so you do not burn yourself.. but keep it near hot does the best. And a 10W40 would invalidate your warranty… just so you know. In a 5W20 engine. You could use a 0W20 oil (I use 0W20 oil) in cold weather and it would be Ok by Ford.

Will 10W40 hurt a 5w30 engine?

Your vehicle does not use 5W-30 oil. The recommended oil viscosity for your vehicle, according to Kia documentation, is 10W-40. If you drive the vehicle in exceptionally cold weather, well below 32 degrees, you can use 5W-30 oil but even 10W-40 is still perfectly OK to use if outdoor temperatures are below freezing.

What happens if you put 10W-40 instead of 5w-40?

10w40 is thicker than 5w40, ONLY when cold. At operating temperature it is exactly the same. Multi-viscosity oils with a lower W number are specifically designed to flow better, and thus lubricate better, at very low temperatures. There is no need to use a 5w-40 if the vehicle only requires 10w-40.

Can you put 10W-40 in a 5w-40?

SprayShack said: Aslong as its fully synthetic it will be fine. 5w – 40 will be better for colder conditions, 10w is thicker to start with thus doesnt get to places around the engine as quickly as 5w-40, but it all depends on temperature.

Is 10W40 too thick?

10W40 is too thick and won’t flow easily when cold.

What happens when you put 10w30 in a 5w30 engine?

Most oils will mix perfectly, provided they have a similar synthetic. Therefore, there is no problem in mixing 10w30 and 5w30 since one will be topping up. Mixing the viscosity of oils will not have any effect on the engine. 5w30 and 10w30 engine oils have close viscosity, and thus there is no harm in mixing them.

What happens if I use 10w30 instead of 5w20?

Originally Answered: Can I put 10w30 instead of 5w20? You can, but you will get worse mileage, and in most cases shorten the life of your engine, as it will take longer to pump up pressure for your bearings and lifters, and won’t spray your lower cylinders for an extra second or so on each cold start.