Car manufacturers usually specify 5W-20 or 5W-30 oil, though some require 10W-30.
These three ratings cover just about every light-duty vehicle on the road, though this is changing as engines become more precise and fussy about specific types oil.
Full-synthetic Oil: These oils are made for high-tech engines.
Can you just put new oil in your car?
Add oil to the car if the dipstick reading is near the minimum line. You should top up your car immediately if you are at or below the proper oil level to prevent damage to your car. Adding oil to your car, however, is not a substitute for replacing your oil on a regular basis.
Can I put 5w 30 oil in my car?
Due to the increased resistance of the thicker 5W-30 oil, your engine will produce slightly lower fuel economy and horsepower output. You also risk engine damage when using 5W-30 instead of 5W-20, as the internal engine components are specifically designed to be used with 5W-20 motor oil.
Can you use 5w30 oil instead of 5w40?
If you are racking your brain to choose between 5w30 and 5w40, we recommend you go with 5w30. However, if it is too expensive or not available for use, you can always go with the 5w40, which is just as good and will not cause any damage to the engine parts.