Question: Is It Better To Use Thicker Oil In Older Engines?

What happens if you put 10w40 instead of 5w30?

If you use 10-w-40 instead of 5-w-30 specified by the manufacturer then the viscosity of 10-w-40 used by you will be higher and oil thicker than what is specified during winters.

Similarly the oil viscosity will be higher and oil thicker than specified during summers..

What is the best engine oil for high mileage?

The Best High Mileage OilValvoline High Mileage Motor Oil. … Castrol GTX High Mileage Synthetic Motor Oil. … Mobil 1 High Mileage 5W-30 Motor Oil. … Pennzoil High Mileage Oil. … Castrol High Mileage Advanced Full Synthetic Motor Oil. … Royal Purple High-Mileage Synthetic Motor Oil. … AmazonBasics High Mileage Motor Oil. … Mobil 1 High Mileage 5W-20 Motor Oil.

When should I use 10w40 oil?

When to Use 10w30 vs 10w40 Using 10w30 oil in cold weather will help reduce excessive oil temperatures and drag as the engine warms up. Using 10w40 oil in the summer will help the oil stick to internal components in high temperatures, avoiding the wear and tear from metal-to-metal contact between moving parts.

Will the wrong oil damage my engine?

The brand of motor oil matters little, but its viscosity grade (10W-30, for example) is important. Use only what the owner’s manual specifies. Using the wrong oil can lead to reduced lubrication and shorter engine life. If the manual says to use synthetic oil, do so.

Should you use synthetic oil in older engines?

It’s not accurate to say that you should never use a synthetic oil in an older car. If the car has been maintained and is in excellent running condition, the synthetic oil may protect the vehicle and prolong its life.

Will 5w30 hurt a 0w20 engine?

0w20 is a fully synthetic motor oil. 0w being the winter weight, the viscosity of the oil at freezing temperatures. … 5w30 can be fully synthetic, however, putting it into your engine which is designed for 0w20 is a bad idea. If it isn’t on the fill cap don’t put it in your engine.

Will 5w20 hurt a 0w20 engine?

The 0 oil will flow better at cold temperatures than the 5 oil. Both oils will have the same viscosity at operating temperature. Using one or the other should cause no issues. … Read the owners manual but seriously look at the OEM oil specs and 5w20 is going to be a superior oil than a 0w20.

Is it better to use thicker oil?

Motor oil becomes thinner and runnier as it heats up and thickens as it cools. Within reason, thicker oil generally maintains a better film of lubrication between moving parts and seals vital components of your engine better.

Will it help to run thicker oil in a car with over 100 000 miles?

Identification. For an older, high-mileage passenger car, it is recommended to switch to a thicker viscosity oil, such as 10W-30, when approaching and passing 100,000 miles, to lubricate the engine well for preservation.

Will thicker oil damage my engine?

Not only that, but the engine will waste energy pumping the thicker motor oil, reducing fuel economy. Since thicker oils don’t transfer heat as well as thinner oils, operating temperatures will increase, too, possibly leading to accelerated chemical break down and harmful sludge and deposits.

What are the disadvantages of synthetic oil?

Disadvantages of Synthetic Motor OilMany of the synthetic oil blends reduce friction better than conventional motor oil. … Synthetic oil does not hold lead in the suspension of the oil. … Problems with racecar type engines using roller lifters. … Synthetic oil has different disposal methods.More items…•

Which oil is thicker 5w30 or 10w40?

A 10w-40 motor oil is a thicker oil at startup than a 5w-30 motor oil. Therefore, 10w-40 oil clings to the engine’s moving parts more than the lower viscosity 5w-30 oil.

Is it OK to use full synthetic oil in older cars?

Myth: Full synthetic oil is not good for high mileage cars or older vehicles. … Synthetic oils will enhance the engine protection in older vehicles with higher mileage, just as they do for new engines.

Is mixing 5w30 with 10w30 bad?

Yes, if topping up. If your oil must be topped up, then you are burning oil already, so the difference won’t cause more damage than is already there. 5W30 and 10W30 are essentially the same at operating temperature.

What is the best oil for older engines?

Valvoline MaxLife 10WValvoline MaxLife 10W-40 stands out as the best oil for old motors. Valvoline comes with enhanced additives. The additives enable your motor to perform better. It comes with seal conditioners that prevent leaks.

What happens if you use 0w20 instead of 5w30?

0w-20 is simply a different viscosity of oil. It won’t be an advantage to your engine if your manufacturer suggests you use 5w-30 and may indeed be a detriment to your engine. … I would suggest using a viscosity for your engine that your manufacturer recommends. You can find that recommendation in your owner’s manual.

What is the best synthetic oil for high mileage cars?

Pennzoil Platinum High Mileage Full Synthetic Motor Oil. … Castrol EDGE High Mileage Full Synthetic Motor Oil. Valvoline Full Synthetic High Mileage Motor Oil. Royal Purple HMX High Mileage Synthetic Motor Oil. Shell Rotella T6 Full Synthetic Diesel Engine Oil. Mag 1 Full Synthetic Motor Oil.More items…•

Does 0w20 damage engine?

So moving one grade of oil is not going to destroy your engine or void your warranty. But you will want to use the right oil to not damage your engine. So don’t go the wrong way and use something too thin when it is hot or too thick when it is cold. Most folks would be better off just using what the manual calls for.