Oil is a hot commodity. The higher the mileage on your car, the more oil it needs to run smoothly. Lightweight cars need more oil than heavy vehicles. And drivers of all types put oil in their engines at different paces—from driving slowly in town to doing speed limit runs on the highway. It’s common knowledge that warm, abused engine oils taste awful. But which oils are unsafe for hot engines? How can you tell if your vehicle requires extra oil or not? Let’s take a look at these questions and more.
Can I Put Oil In A Hot Engine?
The answer is NO, you cannot put oil in a hot engine; however, if it does get too hot, you may want to add some cold oil to the engine (even if it doesn’t say “cold” on the pump). Only cold oils are meant to be added to an engine that has reached ‘hardening off’ temperature, which is normally done when the cylinder walls have cooled off and started to solidify.
Should You Add Oil To Your Hot Engine?
1. The Engine’s Oil System
Oil is injected into a car’s engine by the oil filter. The oil filter holds back some oil as it seats in the 1/4-inch oil line. As more miles are driven, more oil gets rested and results in a gradually running engine with the extra strain on problem parts that need repair or replacement.
2. The Oil Pressure
A functioning oil system means the engine’s oil path is open to a larger volume of oil. As more mileage is driven, the engine has a general awareness of more pressure in its oil paths. Depending on the manufacturer, it may demand pressure that rises as high as one-half psi per 500 miles of driving. If a car isn’t driving at those rates but 5000 miles is aging fast, the owner needs to look at changing his air filter or the air pressure inside the vehicle’s systems.
3. Leaks or Absorbed Fluids
One of the main ways you know if your vehicle requires extra oil is to see if its factory-recommended line of oil use matches up with when your vehicle could have access to the five-grand worth of performance equipment via a Hot Car Detector Light Method such as the hotness gauge inside the cabin.
4. Engine Torque
Hot engines can use slightly more oil than non-hot engines to prevent heat-induced cranking issues. But if the engine is hot, it can also use slightly less oil. This is because the oil system needs to work harder to fill the engine with enough oil. The hotter it is, the more strain on its parts.
5. Temperature and Oil
Hot engines need more oil than cold engines. They also need more oil when hot than cold engines, but not as much as hot engines. The engine’s oil temperature is a factor in how much oil is needed, but the amount of oil used by the engine depends on its operating temperature, too.
6. Oil Quality and Engine Wear
The quality of the oil used in your car’s engine makes a difference in how it performs and how long it lasts. The oil that’s high-quality has better lubrication properties and fewer contaminants than low-quality oils that are made cheaply for a quick profit. High-quality oils also have more additives to help prevent wear and tear on parts such as bearings and gears inside the engine block or transmission.
Is It Safe To Add Oil To Your Hot Engine?
- In the old days, it was a good idea to add oil to a car that had been sitting for a while because this helped prevent engine oil from foaming. A foaming engine is one that has an oil sludge buildup inside the engine. Foaming can happen when the oil is too hot and creates a chemical reaction with the air in the engine, causing it to foam. Foamed oil can cause internal damage to your vehicle’s engine, so you want to avoid it at all costs.
- But today’s modern engines have anti-foam additives in them, so you don’t need this extra step anymore. Still, adding just a few drops of oil when you start up your car will help lubricate small parts and reduce noise in older cars that used thick oils that required more frequent topping off or replacement.
- Also, if your car requires fluid changes more often than normal, then it may be wise to add a few drops of oil as soon as you start your car up every time before you drive it. This will help keep the oil warm and prevent it from cooling down as fast.
- It’s also important to check the level of the oil in your transmission in order to know when to add more or less. The transmission is located behind the engine, so look for an access panel that allows you to see inside. You’ll see a dipstick that looks like a long pencil or stick with a metal cap on one end and usually has an arrow pointing down into it. The arrow should point to the bottom of the stick when you are done replacing the oil and letting it sit for at least a few minutes before driving again. If you don’t see this arrow on top of the dipstick, then check your owner’s manual for instructions on how to tell if your car needs fluid changes—most newer cars have them built in so there won’t be any confusion!
What Happens If You Add Too Much Oil To Your Hot Engine?
- If you add too much oil to your engine, you may notice a thick layer of sooty black smoke coming from your tailpipe. This is because the oil has been heated to such a high temperature and is now burning.
- If there’s too much oil in your engine, it will be difficult to start up and will almost certainly not want to idle properly or run smoothly at all. In fact, if you try to drive with too much oil in the engine, it will probably shut off before you get very far.
- If you add too much oil for some reason and the engine does not shut off or does not have enough power to start or idle properly, then it’s possible that the pump in your transmission is clogged with sooty black gunk that is restricting the flow of fluid needed for the smooth operation of your vehicle. It could also be that there’s been a major problem with your transmission from the beginning and your car is constantly running on its last legs as a result! Getting this problem fixed as soon as possible is always recommended because if left untreated, it could end up costing more money than just getting it fixed right away!
- If you have too much oil in your engine, it’s possible that you’ll run into problems while driving. For example, it could cause your car to overheat and burn oil as it tries to get rid of the excess. That could cause an even worse problem when the engine overheats, causing sooty black smoke to come out of your tailpipe. You might also find that your car will go into limp mode—that is, it will drive for a short period of time and then stop working altogether!
As you can see, knowing if you need to add oil to your hot engine is a little complicated. While you should add oil to your hot engine in small quantities, you should also pay attention to the signs if your engine is hot. If you notice any of the following problems, it’s time to take your vehicle to the garage: Noisy engine Throbbing engine pain Uneven or no oil pressure Crackling radio display Uneven or black smoke when you accelerate These problems could indicate a larger issue with your engine and engine management, but they’re usually harmless signs. If you notice any of these problems in your car, it’s time to get it checked out. The sooner you get it checked, the better.