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Your Guide to How to Read An Oil Dipstick

Your Guide to How to Read An Oil Dipstick

Your engine must always have the proper oil level in order to last longer. As you drive, some oil is consumed, and the oil level can sometimes drop faster than expected so you must have the knowledge of how to read an oil dipstick handy. With the engine turned off, open the hood and locate the dipstick. Remove the dipstick from the engine and wipe any oil from its tip. Then, replace the dipstick in its tube and push it all the way in. Pull out the dipstick and examine the oil film on the end of the stick. You’ll be able to read the dipstick through the measurement lines near the tip that indicate the oil level from full to low. Sometimes you'll see a F and a L and other times, you'll see two small holes or a series of lines that mark these locations. They all show whether your oil is running low or full.

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Take note of how high the oil film on the dipstick has reached and the condition of the oil, and add or change it as needed. You'll recognize that fresh oil is golden in color and pours easily. It gradually darkens and thickens as it passes through your engine. It's fine if the oil looks different than when it was new, but if it's dark black, gritty, or extremely sticky, it's time for an oil change.

Take note that to learn how to read oil dipstick accurately the car must be on a level ground to get accurate reading. Check the oil in your car at least once a month to ensure that there is enough oil and that it is not contaminated. To properly care for your car, you must understand how to read an oil dipstick. Running out of oil can cause severe engine damage, and checking your oil only takes a few minutes. It is worthwhile to spend the time learning how to read an oil dipstick.

How much oil should be on the dipstick?

To effectively know how to read an oil dipstick you must also know how much oil should be on the dipstick. As mentioned you must check the end of the dipstick to see where the oil begins and ends. There are marks that indicate the level of oil that should be reached.  As also mentioned previously, there are times when there are holes instead of marks.

If the oil does not reach inside the dipstick's markings or holes, you must add at least one quart of oil. If the dipstick does not show an oil level, you must add oil right away. The amount of make-up oil you should add depends on the age of your car, the type of engine, total mileage, and driving conditions. The dipstick is your indicator of unusually high oil consumption. You should start to watch out if you begin consuming about one quart per a thousand miles. If the problem progresses to one quart every 500 miles, it's time to plan an overhaul (800 kilometers).

In some cases, the oil level may have risen since the last time you checked, or the dipstick may have too much oil on it. This could be caused by condensed water (from combustion), condensed fuel, or a coolant leak, all of which are cause for concern. Fuel-diluted motor oil (due to blow-by or leakage) has the potential to significantly reduce oil viscosity and thin additive concentration. The odor of diesel fuel is frequently detectable right from the dipstick.

Water, either free or emulsified, is harmful to the oil and the engine. Water condensation may be more severe for short-distance drivers if your engine has the flexible fuel vehicle (FFV) option and you are using an alcohol-gasoline fuel blend.

It is critical to remember that combustion in your engine produces water – more water than the fuel consumed. The majority of the water exits through the tailpipe, but if the engine is cool, a significant amount may condense in the crankcase. Be aware that there is a chance that the drop of oil will catch fire.

To detect if there is water in used motor oil, place a drop of oil from the dipstick on a hot exhaust manifold. If it crackles then it means the water is tainted. An oil and filter change may be necessary in this case. As to what is the cause of the high oil level, the situation must be corrected as soon as possible. Keep in mind that accidentally overfilling your engine with oil can also cause issues. As the crankshaft rotates, it churns the oil, causing aeration and, eventually, the formation of sustained foam. This can result in overheated motor oil, oxidation, and oil pressure loss. Spongy aerated oil is difficult to pump. It deprives the engine and critical lubricated surfaces of lubricant.

Is it OK to slightly overfill engine oil?

You must know how to read an oil dipstick for this one reason as well. For you must not overfill the engine oil at all.  Overfilling engine oil can result in thousands of dollars in repairs. If an excessive amount of oil enters your vehicle's crankshaft, the crankshaft's rotation speed begins to aerate the oil. This causes the oil to be whipped into a foam.

This change in your oil means that your oil cannot move well through your engine and may even cause all oil flow to stop. This causes your engine oil to become overheated, resulting in oil pressure loss. When an engine does not receive the oil it requires for proper lubrication, it can seize.

Changing your oil is one of the most basic car maintenance tasks that you can do at home. Maybe you already do it! When changing your own oil, one thing to remember is not to overfill the oil. What happens if you overfill the engine oil in your vehicle? It can severely damage engine components and even cause your engine to seize. If you suspect an oil overfill, the first step is to confirm that it is indeed overfilled before beginning to drain the excess oil from your oil pan.

If you recently changed the oil in your vehicle and notice a thick, white smoke coming from the exhaust pipe while driving, you most likely overfilled the oil. To confirm that too much oil is the issue, drive your vehicle for about 10 minutes to allow the engine to warm up. This allows oil to begin moving through the engine. This is how to read an oil dipstick accurately under normal driving conditions.

Again, park your car on a level surface and remove your dipstick from the engine. Wipe it down with a rag, napkin, paper towel, or similar. Replace the dipstick completely and wait a few seconds before pulling it out again. Examine the fill line on the dipsticks. If the oil level is higher than the fill line, your engine oil has been overfilled.

Once you've determined that you have too much oil in your vehicle, the next step is to drain some of it until it reaches the proper level. You'll know where to start if you've changed your own oil, but if you've overfilled the engine because you added too much when it was low, you will need to use a 3/8-inch drive socket wrench to loosen the oil plug. Slide under your vehicle and locate the oil pan once you're down there.

Find the large bolt at the bottom of the oil pan. That would be the oil plug you should be looking for. When you find it, place a plastic oil pan under the oil plug. That does not mean your car's oil pan. Begin loosening the oil plug with your socket wrench. You want the overfill oil to begin trickling out gradually. Allow it to drip until you believe you have drained enough oil, then tighten it up again. You run the risk of removing the oil plug if you loosen it too quickly. At that point, all of your engine oil will begin to leak. That is not what you want. Check your dipstick again after you've drained some oil. If it's still too full, go through the process again. If you drained too much, add more oil until it's in the proper range.

What if there is no oil on the dipstick?

A lack of oil for even two seconds can be disastrous to an engine. Without the oil to keep the parts apart, they start to rub against each other, and metal-to-metal contact occurs at high speeds. An engine can self-destruct in a matter of seconds if it is not lubricated. When no oil appears on the dipstick but the oil light in the car does not illuminate, there are most likely at least two quarts left. If the light illuminates, it means that the oil pump is not picking up any oil from the pan, resulting in no oil circulating and, as a result, no oil pressure. No matter where you are, turn off the key as soon as possible. Once the oil light comes on, the car will not make it to a service station.

An engine will seize in a matter of seconds. When this happens, the metal within the engine is so damaged that it cannot be repaired. The only solution is a new engine. Check the oil in your car on a regular basis. Begin by checking the oil twice a week if the car is driven frequently. If the car is not leaking or burning oil, do this every 500 miles. If the oil is normal and does not need to be filled in either case, the next check should be at the end of the month.

If it is determined that the engine is not burning or leaking oil, the time limit can be extended. The goal is to determine how quickly the engine consumes oil so that you do not run out. Changing the oil every 3,000 miles not only keeps the oil and engine clean, but it also detects any impending problems or oil leaks before they become severe. Many manufacturers recommend a longer interval between oil changes, and while oil does not break down, it does become dirty after 3,000 miles on all vehicles. The most important aspect of car maintenance is changing the oil to ensure that the oil remains clean and does not build up in the drivetrain.

What does good oil look like on a dipstick?

Not only do you need to know how to read an oil dipstick to determine if it's low or full in oil but you should also know how good oil looks like. Driving conditions, fuel quality, engine age, motor oil quality, and climate all influence the rate at which engine oil ages. If your oil is not changed on time, it will wither and fail to protect your engine.

So, let's examine the oil on the dipstick closely. The oil should have a smooth, glossy, and somewhat transparent appearance. It's time for an oil change if it has sludgy deposits or grainy dirt particles. The same is true if the oil appears to be too thick, too dark (opaque), or has a putrid rotten-cheese odor.

If you're still unsure whether you need an oil change, try a blotter spot test. Oil that has been oxidized or contaminated will lose interfacial tension. Placing a drop of used oil from the dipstick on the surface of water is a simple test for interfacial tension. If the oil drop spreads out across the water's surface rather than beading up like new oil, it's time for an oil change.

It's important to know how to read an oil dipstick correctly so as not to overfill your engine's oil. Keep the oil level between the F and L indicators, and you're good to go. If it's very close to or below the L, you'll need to add oil or risk running out.