Do you want thicker or thinner oil in winter?

Should I use thinner oil in winter?

Thin oils have lower viscosity and pour more easily at low temperatures than thicker oils that have a higher viscosity. Thin oils reduce friction in engines and help engines start quickly during cold weather.

Is thick oil bad for winter?

The thicker the oil, the slower it will flow, but the better it will protect when hot. … Together, the numbers indicate the difference in viscosity of the given oil between the time of a cold winter start and when it is warmed up to normal operating temperatures.

Should you use heavier weight oil in winter?

Since lower-viscosity oils flow more readily, they provide better cold-weather startup protection compared to higher-viscosity oils. Thus it’s beneficial to switch to a lighter viscosity motor oil in winter if you can.

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

As posted above, mixing 5w30 with 10w40 will give you an oil that performs somewhat better in the cold than 10w40, but less good cold than 5w30, and that has a viscosity a bit higher than 5w30 but a bit lower than 10w40. Mixing different oils will not improve the performance or efficiency of the engine in any way.

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Should you use different oil in winter?

Ultimately, the best oil for summer is the one your vehicle manufacturer recommends. The same goes for winter. Always follow the viscosity grade recommended in your owner’s manual. You don’t necessarily need to choose different oil grades for hot and cold weather, but you do need to invest in regular oil changes.

When should I use thicker oil?

If, for instance, clearances between engine components have increased, gotten sloppy, a thicker oil can help to fill the void. Within reason, thicker oil maintains a better lubricant film between moving parts. Some have even used thicker oil in a leaky engine to prevent oil from seeping out.

Is 10W40 good for winter?

10W30 and 10W40 Defined

This oil type will not have problems in freezing climates up to -30°C/-22°F. … Similarly, SAE 10W-40 motor oil performs well in cold weather conditions. It has the same low-temperature limits as the 10W-30 but is better in higher temperatures.

Is higher viscosity oil thicker or thinner?

The number to the right of the dash is the viscosity rating at engine operating temperature. The higher the number, the thicker the oil. The lower the number, the thinner the oil.

Is it bad to use a heavier weight oil?

Using a heavier grade than recommended may cause decrease in fuel economy, higher engine loads and eventually shortened engine life. Using a lighter grade than recommended may result in excessive mechanical wear and reduced engine life.

Is 5w30 oil thicker than 10w30?

10w30 is thicker than 5w30 because it has a higher viscosity in low temperatures. … Thicker or higher viscosity metal oil has a better seal compared to low viscosity oil. Thicker oil offers better lubrication of motor and engine parts.

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Which oil viscosity is better for warm climates?

10W and 15W are more for hot climates. The other number that comes after the hyphen indicates the viscosity at higher temperatures. So the higher the number, the better the oil flows even at very high temperatures because it has a higher viscosity and it doesn’t get too thin.