do you ck oil when motor is warm or cold
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Should oil levels be checked when the engine is hot or cold? March 11, 2010. “Is there a ‘best’ way to check the oil level? I have always checked the oil level with the engine stone cold. I recently read in an auto enthusiast magazine that oil should be checked when the engine is hot – and that seems wrong.
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Oil Viscosity - Does your Weight make the Grade? It stands for “Winter” and that is the key to understanding viscosity grades. A 10W-30 is a multi-grade (two viscosities) motor oil, and as the name implies, it meets more than one grade. Forty years ago there were winter grades for cold weather and summer grades for warmer weather. A typical winter grade was 10W. A typical summer grade was 30.
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Which is better: changing your oil when the engine is hot or cold? But when the oil is cold, it's more viscous (it's thicker), so it drains out more slowly. And even if you're willing to wait longer for it to drain out, it's likely that a bit more oil will remain coated on the inside walls of the engine when you're done. Not a lot more than if the oil was warm, but a little more. RAY: So I'd say a warm oil change is a little bit better.
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What do the oil numbers 10W-30 mean? Its viscosity rating is determined by the length of time it takes to flow out of the hole. If it flows quickly, it gets a low rating. If it flows slowly, it gets a high rating. Your engine needs oil that is thin enough for cold starts, and thick enough when the engine is hot. Since oil gets thinner when heated, and thicker when cooled, most of us use what are called multi-grade, or multi-viscosity oils.
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Checking your engine oil, warm or cold engine? Singletrack Mountain Bike Magazine. Chat Forum. My dad always told me to check when the car was cold as this gave a true indictation of how much oil was in the sump, but then it seems that a warm engine is the 'norm'. What do you do, and if warm is it ok to check just after switching off, ie normal running temp, or leave it to cool abit?
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Check oil hot or cold? Confidence votes 110. On the dipstick there is a safe range. You can check it either hot or cold. When cold the level should be close to the bottom of the safe range. When hot it should be close to the top of the safe range. + 81 others found this useful.
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- Alright motorheads, what's the difference between these two blends of synthetic oil? My car recommends 5W20 Dino, but I go with synthetic (don't want to open that arguement) when I took it in to get an oil change, the dealer had a special on 0W20 synthetic....s stated, the W is designating a winter viscosity. Viscosity essentially means resistance to flow, the higher the number the higher the resistance to flow. A single weight oil, say SAE 40, is saying the viscosity of the oil is 40, which is a higher number than say, 20 or 30.
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Motor Oil Viscosity Grades The difference is when the viscosity is tested at a much colder temperature. For example, a 5W-30 motor oil performs like a SAE 5 motor oil would perform at the cold temperature specified, but still has the SAE 30 viscosity at 210° F (100° C) which is engine operating temperature.hen you see a W on a viscosity rating it means that this oil viscosity has been tested at a Colder temperature. The numbers without the W are all tested at 210° F or 100° C which is considered an approximation of engine operating temperature.
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What Is the Difference Between 5W30 & 20W50 Motor Oil? The difference between 5W-30 and 20W-50 motor oil is in their viscosity rating at different temperatures.The first number is a temperature reading, the second is the viscosity rating. 5W-30 oil is commonly used in passenger cars for normal use throughout the year. A 20W-50 oil will not protect a car as well in a cold winter and its greater viscosity will increase drag and friction in a passenger vehicle.
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- Bottom Line. Warm a car 5 minutes for a warm oil change. Perform a cold oil change to prevent accidental injuries from hot oil and car parts. It is best to have a certified mechanic perform all oil changes to prevent personal injuries or potential damage to the vehicle.
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Check oil hot or cold? Most owner's manuals will advise you to check the oil level when the engine is warm (after driving 10 or 15 minutes), about 5 minutes after you stop the engine. This allows the warmed oil to be fully circulated in the engine, and then drain down to the oil pan where its level can be measured by the dipstick.
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How To Pick The Right Motor Oil For Your Car Also, if the oil is too thick the engine requires more energy to turn the crankshaft, which is partly submerged in a bath of oil. Excessive thickness can make it harder to start the engine, which reduces fuel economy. A 5W oil is typically what's recommended for winter use.
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Motor oil Motor oil, engine oil, or engine lubricant is any of various well-developed lubricants (comprising oil enhanced with additives, for example, in many cases, extreme pressure additives) that are used for lubrication of internal combustion engines.he first number '10W' is the viscosity of the oil at cold temperature and the second number is the viscosity at 100 °C (212 °F). The two numbers used are individually defined by SAE J300 for single-grade oils.
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What Is The Optimum Engine Oil Temperature? Cold engine oil causes excessive frictional drag on the bearings and cylinder walls. A quality conventional motor oil will tolerate oil sump temperatures of up to 250 degrees, but starts breaking down over 275 degrees. The traditional approach is to try to hold oil temperatures between 230 and 260 degrees.
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Grinding sound during cold start? I have a 2009 Honda Accord. Over the past several months, I've noticed a grinding sound immediately after cold-starting the engine. It only lasts for a fraction of a second, doesn't continue once the engine is running, and doesn't happen if I shut the engine off and start it again a few minutes later. little background: The car has 92,000 miles on it. I've noticed that it burns oil pretty quickly, so I keep an eye on it and make sure to add more if needed. Most recently, I got an oil change with a high mileage synthetic, but that has not solved the issue.
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When are you supposed to check your oil, when the engine is warm or when it's cold? TOM: And second, when you check the oil first thing in the morning, you have the added convenience of being able to use your flannel PJs to wipe off the dipstick. RAY: But a few years ago, Ford Motor Company started recommending that people check their oil on Fords, Lincolns and Mercuries when the engine was warm.
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Experts weigh in: Do you need to warm up your car in cold weather? Henmueller suggested that cars should idle one to two minutes before driving in cold weather. When temperatures drop to freezing, or when it's cold enough that windshields will frost over, the oil needs to warm up before it can move smoothly throughout the car. How temperature changes affect tire pressure.
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What is the difference between motor oils 5W30 10W30 20W50 and so on? 30w refers to the viscosity of the oil. 10/30 is a mixture with 10w wich is more viscous. The reason multiviscosity oils are used is so that when the motor is first started th … e lower weight oil will get to the top of your engine more quickly.0w refers to the viscosity of the oil. 10/30 is a mixture with 10w wich is more viscous. The reason multiviscosity oils are used is so that when the motor is first started th … e lower weight oil will get to the top of your engine more quickly.
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What Exactly Do The Multi-Visc Designations Mean? As you can see from the table, the lower the W number the lower the Cranking (cP) at lower temperatures. This means that when your engine is cold the lower the W number the easier the oil will flow. Now lets look at the high temperature test requirements, we will look at the 10W-30 again. The minimum viscosity of the 10W oil at 100C (212F) is 4.1 cSt.
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Motor oil Motor oil must be able to flow adequately at the lowest temperature it is expected to experience in order to minimize metal to metal contact between moving parts upon starting up the engine. The pour point defined first this property of motor oil, as defined by ASTM D97 as ... an index of the lowest temperature of its utility ...
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Boat motor oil what happens if you use conventional instead of 4 stroke? Car motor oil should work fine in a 4 stroke boat motor. The problem come with using 4 stroke oil in a 2 stroke motor. 2 stroke boat motors mix the oil with the fuel for lubrication, so this type of oil is formulated to burn without fouling the plugs.
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- The difference is when the viscosity is tested at a much colder temperature. For example, a 5W-30 motor oil performs like a SAE 5 motor oil would perform at the cold temperature specified, but still has the SAE 30 viscosity at 210° F (100° C) which is engine operating temperature.
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Oil Viscosity - Does your Weight make the Grade? For starters, in oil nomenclature, “W” does not stand for “Weight”. It stands for “Winter” and that is the key to understanding viscosity grades. A 10W-30 is a multi-grade (two viscosities) motor oil, and as the name implies, it meets more than one grade. Forty years ago there were winter grades for cold weather and summer grades for warmer weather. A typical winter grade was 10W. A typical summer grade was 30.
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check oil level with engine warm or cold? Then you should be able to see what portion of the dipstick is wet with oil. In any event, if you see that the oil dipstick level is 1/4 above full when the engine is cold and the car is IG-OFF, then you need to drain ~1/4 quart, to bring the oil level near the full mark. #10 Jan 15, 2011.
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Motor Oil Viscosity Grades When you see a W on a viscosity rating it means that this oil viscosity has been tested at a Colder temperature. The numbers without the W are all tested at 210° F or 100° C which is considered an approximation of engine operating temperature.
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- Burns occur where portions of the arc strike the patient. The electric arc remains the cause of most high-voltage electrical burn injuries. Because of its high frequency, the electric arc has become the basis for many standard safety precautions.