Can You Add Motor Oil to a Hot Engine? Get The Facts!

We all know how important it is to actually maintain our car oil level as it helps to ensure that the car runs smoothly. But, when is the right time to actually get the job done? Can you add motor oil to a hot engine?

Well, it is safe to say that the answer is yes, you can definitely add motor oil to a hot engine without anything bad happening. There are many drivers out there that do so in order to save time. However, you may want to be careful when doing so because heat may eventually hurt you.

In this article, we are going to explain everything you need to know about adding oil to a hot engine and how you can safely do so. Continue reading to learn more.

So, without further ado, let’s get started.

Can You Add Motor Oil to a Hot Engine?

Yes, there is no doubt that you can do so. It doesn’t matter if your engine is hot or cold when you decide to pour the oil in. The main reason why people think that cold oil will cause damage to their engine is that the engine is made of metal. And it is pretty much safe to say that metal is malleable when it comes into contact with extreme temperatures or anything capable of producing a wide temperature shift.

It’s best to keep in mind that the metal that a car engine is made of won’t crack if you decide to pour cold oil into it while it is hot. The real threat is if you spill the oil on the top of the engine while you are pouring it in. If it’s a case where the engine is too hot, those spills could result in a lot of smoke or even fire happening.

What Will Happen If You Put Oil in a Hot Engine?

Can You Add Motor Oil to a Hot Engine

You don’t have to worry about anything happening when you put oil in a hot engine, as long as you don’t cause it to spill onto it. There’s a high chance that technicians at a repair shop will turn on your car engine and have it heat up for a while before actually pouring the oil into it.

It is said that cold oil usually takes a longer time to absorb the heat from the engine, which is why the best thing to do is to add oil to a warm engine. However, there is absolutely nothing wrong if you decide to add oil to a cold engine either. The most important aspect that you’ll need to pay close attention to is the amount of oil. You definitely don’t want to pour too much or go over the recommended level.

This is exactly where the temperature of the engine comes into play because you don’t want to check the oil level on the dipstick while the engine is hot. We think it is best to wait five to ten minutes, depending on how long the engine has been running.

Can You Add Oil if the Engine is Running?

Most people don’t think this would be a good idea or something to practice doing. It could be a case where you expose yourself or even others in your surrounding if you decide to add oil while the engine is running.

Even if it’s a case where you don’t cause any damage to the car itself, pouring oil into the engine while it is running can result in smoke and even fire. It’s not a good thing to inhale a large amount of smoke as this could affect your lungs and respiratory system which can be bad for your health in general.

How to Top Up Engine Oil Correctly?

If you are planning on topping up your engine oil what you’ll need is a bottle of engine oil that is recommended by your car’s manufacturer. Upon looking, it might be a case where your car uses full synthetic oil, regular or synthetic blend. You will also notice different ratings which is an indication of the temperature the oil is capable of withstanding.

Apart from that, you will also need to have a clean cloth which you’ll use to wipe off the dipstick as well as a funnel to pour the oil through, and a pair of gloves to protect your hands.

The first thing you’ll have to do is ensure that your car is parked on a flat surface. You should definitely avoid streets with slopes. You should now turn the engine off and let it cool down for roughly 15 minutes.

At this point, you’ll need to release the hood of your car, it can be found on the inside of your vehicle. You can now feel under the hood for the safety latch and release it. Make sure to properly secure the hood with a metal rod.

We recommend that you remove the dipstick which can be found near the oil cap. To determine your oil level, you will have to wipe the dipstick clean with a piece of cloth or rag before placing it back in. You should remove the dipstick once more and you should see where the oil falls between the minimum and maximum lines.

Now it is time to unscrew the oil cap and put it in a safe place for keeping. Place the funnel over the opening and slowly pour the oil into the funnel. Make sure to only add the amount needed.

You can now remove the funnel and wipe down any oil on the side of the opening. You can now place the cap back on and tightly secure it.

How Long to Let the Engine Cool Before Adding Oil?

If it’s a case where you are simply adding oil to the engine, then you don’t necessarily have to wait until the engine cools down before pouring it in. However, if you are planning on doing an oil change, then you will need to wait for roughly 15 minutes before starting to change the oil.