Quick Answer: What Does The W Stand For In 10w30?

Is 10w30 better for high mileage?

Both high mileage 5w30 and 10w30 engine oils have the same additives, the only difference is the viscosity at cold startups.

Since both oils have the same operating temperature viscosity (30) and additives, they will perform exactly the same.

However, 5w30 flows much better than 10w30 during cold starts..

What happens if I put 10w30 instead of 5w30?

Most oils will mix perfectly, provided they have a similar synthetic. Therefore, there is no problem in mixing 10w30 and 5w30 since one will be topping up. Mixing the viscosity of oils will not have any effect on the engine. 5w30 and 10w30 engine oils have close viscosity, and thus there is no harm in mixing them.

What does the W stand for in oil?

winterThe “W” stands for winter, not weight as many people think. The lower the number here, the less it thickens in the cold. So 5W-30 viscosity engine oil thickens less in the cold than a 10W-30, but more than a 0W-30.

What does the letter W stand for in SAE 10w30?

winterThe “W” that you see on oil labels stands for the word winter because this portion of the label shows the viscosity level of oil when an engine is cold. Motor oil that is thinner can flow more easily and faster. This is important because when you start a cold engine, the oil needs to lubricate the equipment quickly.

What is SAE 30 oil used for?

Use. SAE 30 oil is typically used for smaller air-cooled engines, like the ones in small tractors, lawnmowers, and chain saws. Most motor oils today are multi-grade oils that will perform well in all seasons.

Can I use SAE 30 instead of 10w30 in my generator?

It is pefectly fine to use SAE 30 oil in place of the 10W30, as long as you never let the oil get below degrees 50C.

What is the best oil for older engines?

When you’re choosing the best oil for older cars or high mileage engines, there are several criteria you can look at.Pennzoil High Mileage Conventional Motor Oil. … Castrol GTX Part-Synthetic High Mileage. … Valvoline MaxLife High Mileage Synthetic Blend. … Mobil1 High Mileage Engine Oil. … Amsoil Premium Protection Motor Oil.More items…•

Should I use synthetic oil in an older engine?

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.

Can I use SAE 30 in my pressure washer?

The power washer oil type that you use may also depend on the climate. … With low viscosity, the oil flows more easily. Most pumps work fine with SAE 30 non-detergent oil.

Is it better to use 5w30 or 10w30?

The only difference between these two oils is cold flow ability: a 10w30 oil will move slower than a 5w30 oil during cold startups. … If the oil will be in the engine during winter and you live in a place where it gets cold during these months, use 5w30 oil. If it will only be in the engine during the summer, use 10w30.

Which oil is best for high mileage?

5 Best Motor Oils for High Mileage Engines#1 – Mobile 1 High Mileage Synthetic Oil.#2 – Royal Purple HMX Synthetic Oil.#3 – Mobile Super High Mileage Synthetic Oil.#4 – Castrol GTX High Mileage Synthetic Blend Oil.#5 – Pennzoil High Mileage Synthetic Blend Motor Oil.

Should I use SAE 30 or 10w30?

For operating at a varying temperature range 6 degrees Fand above, use 10W30 weight. For strictly warmer temperatures above46 degrees F, SAE 30 is recommended.

Can I use SAE 10w30 in my lawn mower?

Yes you can use 10w30 in a lawn mower engine, however oil type recommendations will vary between makes and you should of course use the oil type specified in your users manual.

What is equivalent to SAE 30 oil?

SAE 10W is equivalent to ISO 32, SAE 20 is equivalent to ISO 46 and 68, and SAE 30 is equivalent to ISO 100. As you can see, there is a bit of a difference between ISO 68 and SAE 30. The viscosity of the fluid largely determines the oil temperatures within which the hydraulic system can safely operate.

Is SAE 10w30 the same as 10w30?

SAE 10W30 is an oil that has SAE 10W viscosity(thickness) at low temperatures, and SAE 30 viscosity at high temperatures. The W stands for ‘Winter’. … At operating temperature, there’ll likely be little difference between SAE 30 and SAE 10W30. In theory, they’re the same at high temperature, which is IIRC set at 100C.

Is Thicker oil better for older engines?

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.

What oil is thicker 10w30 or 10w40?

The viscosity of hot oil is measured using different test parameters than when the oil is cold, so the numbers after the “W” don’t relate to the numbers in front of the “W”. The difference between 10W-30 and a 10W-40 is the high temperature viscosity. Obviously, a 10W-40 is thicker than a 10W-30 at high temperature.

Can I use 5w30 instead of SAE 30 oil?

No. SAE 30 is a single viscosity motor oil. Only multi viscosity motor oils only should be used in any car. … 5W30 is motor oil that is thinner when cold than 30 weight motor oil and thicker than 5 weight motor oil when hot.