What happens if you put 10w30 in a 5W-30 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 you put 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.

What happens if you accidentally mix oil weights?

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.

What would happen if you used oil that was too thick for your engine?

If you use too thick of a motor oil for the conditions, your fuel mileage will likely suffer. This is because the thicker oil increases resistance on moving parts such as pistons. While your engine will be protected, it will be at the expense of more frequent trips to the gas station.

Can I use 10w30 instead of SAE 30 in my lawn mower?

Nope. SAE 10W30 is an oil that has SAE 10W viscosity(thickness) at low temperatures, and SAE 30 viscosity at high temperatures. The W stands for ‘Winter’. Note that these viscosities are relative, and standardised numbers and no absolutes, the oil doesn’t get thicker when it’s hot, it gets thinner.

Can I use 10w30 instead of 10w20?

The w as in 5w or 10w means winter. Running 10w30 oil in a hot climate is certainly ok and probably preferable as it will hold up better.

Can you mix engine oil when topping up?

Can I mix different brands of car engine oil? So to answer the question, you want to avoid mixing and topping up car oils from different brands or manufacturers should be avoided, even if the API assures they are compatible.

Can thick oil cause misfire?

4: Misfiring You would feel this as a sudden jerk of the engine while it’s running. As far as oil goes, this usually occurs because a layer of oil has coated the spark plug. Oil can foul your spark plugs and cause poor performance due to lots of reasons.

Is 10W-30 good oil?

10W-30 motor oil makes for a decent high-mileage oil. It gives a better fuel economy while reducing the oil consumption for older engines. Older engines with more than 75,000 miles on them require a thicker oil that will properly lubricate their critical engine parts and prevent oil leaks, sludge, and deposits.