Which is better 5w 20 or 5w 30?
The thicker 5W-30 should see a slight advantage when operating at higher temperatures, while the thinner 5W-20 oil should provide better engine protection at lower temperature levels and has the added benefit of slightly improving fuel efficiency..
When should I switch from 5w20 to 5w30?
On a vehicle engine with 5W20 printed on the oil fill cap…. If the engine was originally designed to run 5w-30 then make the switch immediately. See if any of your engines were back specced from 30 to 20. Oil fill cap is not stamped by the engine designers.
What happens if you put 5w20 in a 5w30 car?
It won’t damage your engine, just switch back to 5w30 next oil change. The high number indicates thickness when warm, You may burn some oil before the next change but I would say let it go.
What happens if you mix 5w20 with 5w30?
You can mix a 5W20 with a 5W30 oil with minimal amount of issues provided it the same manufacturer and the same API classification. The question is ‘why would you?” If it is because you oil is low and the only thing available is a different grade then it might be fine until you can get it changed.
Will 5w20 hurt a 5w30 engine?
Probably not. 5w20 oil is fairly light oil and is generally designed to work with newer engines. Motor oil has become part of a manufacturers program to allow engines to get higher fuel mileage. Lighter oils take less HP to pump through an engine than heavier oils.
Is 5w20 good for high mileage?
Generally, you should use the oil that is recommended in your manual. If the manufacturer recommend 5W20 — you should stick with it. … Finally, some manufacturer have “High Mileage” grade oil. These are said to have additional additive specifically formulated to help engine with over 75,000 miles.
What happens if you put the wrong oil in your car?
You might notice a few oil spot in your garage or under your car because using the wrong oil can lead to leaks, or you might become aware of a burning smell while driving. If the oil isn’t working as it should engine parts might not be lubricated well enough and cause friction, which can burn the oil.
Is it OK to use 5w30 instead of 5w20?
If you put in 5W-30 oil instead of 5W-20 when the latter is the grade suggested by your vehicle’s manufacturer, damage to internal engine parts can occur. Additionally, your engine may experience performance issues such as diminished fuel economy and horsepower.