Is 5W20 or 5W 30 better for high mileage?

As you have likely now concluded, 5W20 is better suited for colder temperatures. If you need motor oil for summertime performance, 5W30 is going to be the better bet. However, you should only switch to this oil type of your car manufacturer or personal mechanic recommend doing so.
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Is 5w20 good for high mileage?

Designed for high mileage vehicles

Mobil 1 High Mileage 5W-20 motor oil is recommended by ExxonMobil for use in high mileage vehicles (even those that have used lower quality conventional oils), including: Cars. Trucks.
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Can I use 5w30 instead of 5w20 in high mileage engine?

Can You Use 5w30 Instead Of 5w20. It is not recommended. Although they both have the same winter rating of 5, the thickness (viscosity) of 5w30 is a bit higher than 5w20. That means your engine's at stake for using the high viscosity oil.
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Is 5w30 good for high mileage?

Amazon Basics Full Synthetic is the best 5w30 oil for high mileage vehicles. This oil should only be used on vehicles exceeding 75,000 miles. This motor oil is formulated for longer drain intervals. It helps in preventing a build-up on drain intervals and preventing rust and corrosion.
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Should I use 5w30 instead of 5w20?

In general, it is not recommended that you use 5w30 oil (or any other oil weight) in place of 5w20 oil, as the slightest difference in viscosity can potentially damage your engine.
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5w20 or 5w30? Which do I run and why. Is 5w20 a hoax for fuel milage?



What's the difference between 5w20 and 5w30 oil?

So, due to viscosity, 5w20 is a thinner oil during operating temperatures, whereas 5w30 is thicker during operating temperatures. A majority of manufacturers are now producing engines that operate on 5w20 oil, to which it's important to stick to this viscosity and not substitute 5w30.
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Can I mix 5w30 with 5w20 synthetic?

Yes, you can mix 5W20 and 5W30 oil. However, your engine MUST support it. Both oils should be of the same brand to prevent engine damage and should also be of a similar API service level.
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What is the best oil for a high mileage motor?

10 Top-Rated Oils and Additives for High-Mileage Vehicles
  • Valvoline High Mileage with MaxLife Technology Synthetic Blend Motor Oil. ...
  • Pennzoil High Mileage Motor Oil. ...
  • Slick 50 Recharged High Mileage Treatment. ...
  • Gumout Fuel System Cleaner. ...
  • Royal Purple High Mileage Synthetic. ...
  • Techron Fuel Cleaner. ...
  • Mobil Super High Mileage Oil.
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What oil should I use in my high mileage engine?

If you know your vehicle has received regular oil changes at the manufacturer's Mobil 1™ High Mileage synthetic motor oil is the best choice. Why? This high mileage oil contains a higher base oil viscosity to help reduce leaks and provide better high temperature protection.
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What type of oil is best for high mileage cars?

High mileage oil is designed for vehicles with more than 75,000 miles. Such oil features additives that help protect seals. This leads to less leakage and oil burn-off, which can be common in older cars. If your vehicle is high-mileage and high performance, it's suggested that you go with this type of synthetic oil.
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Is Thicker oil better for high mileage cars?

The slightly thicker oil film from the heavier base weight oil - 10W - can help protect worn engine bearings as well. As long as you're not hearing knocking or serious mechanical noises from the engine, the heavier oil should buy you many more miles of service from your vehicle.
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Is 5W30 better for older cars?

5W-20 and 5W30 motor oil are winter viscosity grade oils primarily recommended for older engines and light-duty use. These oils are best utilized in colder temperatures.
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How many miles is 5W20 oil good for?

Protects for up to 20,000 miles between oil changes

Mobil 1 Extended Performance High Mileage 5W-20 advanced full synthetic motor oil is designed to protect critical engine parts for up to 20,000 miles between oil changes and help extend the life of vehicles with more than 75,000 miles.
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Is 5W20 oil good for summer?

Is 5W20 Good In Hot Weather? As a general rule, 5W-20 oil offers a superior viscosity index, as well as a broader temperature range when compared with it. You can enjoy even greater protection by having 5W 30 oil in colder conditions and hotter ones. Those living in colder, wet weather ought to apply 5W-20 oil.
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Does high mileage oil make a difference?

Reduced oil consumption: High mileage vehicles tend to leak and burn off more oil than younger cars due to degraded engine seals. High mileage oil rejuvenates degraded seals, which leads to less oil consumption and burnoff. Less engine sludge: Older engines tend to accumulate sludge left behind by other motor oils.
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Should I use thicker oil in an older engine?

A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil — 10W — can help protect worn engine bearings as well.
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Should you use synthetic oil in a high mileage car?

A full synthetic oil is not suitable for high mileage vehicles or older ones. In fact, synthetic oil is “slipperier” than conventional oil, which is lower in viscosity, less compatible with seals, and therefore more likely to leak or leak in places conventional oil would not be. It is completely untrue once again.
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When should you use high mileage oil?

Many believe that you should switch to high mileage when your vehicle reaches 75k miles. Another opinion is that you should switch if your vehicle is getting older and your engine is showing signs of loosening. If you frequently notice oil leaks on your older vehicle, you should start using high mileage oil.
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Which engine oil lasts the longest?

This is because synthetic oil is highly refined and can last longer than conventional oil. The refined quality of synthetic oil also gives your engine better performance, which is why it's often used on high-performance vehicles.
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Is 5W 20 oil synthetic?

5W-20 conventional oil is made out of refined crude oil and several additives. It provides adequate performance at normal operating temperature and is recommended for engine protection and lubrication. 5W-20 synthetic motor oil is made of synthetic base oil (refined and modified hydrocarbon atoms) and additives.
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What happens if you mix engine oil grades?

Oils are also made available with different grade ratings that determine the viscosity and its ability to perform under varying weather conditions. Can oils of different grades be mixed? The good news is that mixing different types of oil it will not harm your engine in any way in the short run.
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Can you mix different brands of 5w20 oil?

THE ANSWER IS NO!

(Why anyone would even consider doing this in the first place is something we cannot comprehend. But we digress.) Technically, using a grade of oil that's recommended by your car manufacturer is correct. However, if you combine two different brands of motor oil, you could be at risk of damage.
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Is 5w30 good for summer?

When should I use 5w30 oil? You should always use the oil recommended by your vehicle's manufacturer. However, 5w30 oil can function in temperatures as low as -30ºC and as high as 40ºC, making it an ideal choice if you drive your car in a place with relatively high seasonal temperature variations.
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When should I use 5W-30 oil?

5W-30 oil is primarily a winter viscosity grade motor oil. While it does perform adequately at a higher temperature, its best use is for people who drive in cold temperature regions. Due to its lower viscosity, it's typically recommended for petrol vehicles or a light-duty diesel engine.
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How long does 5w20 synthetic oil last?

Protects for up to 10,000 miles between oil changes*

Mobil 1 5W-20 advanced full synthetic motor oil is designed to deliver outstanding engine protection, keep your engine running like new and protect critical engine parts for up to 10,000 miles between oil changes.
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