Is 5w30 better than 15w40?

Probably not. 15w40 is usually used in diesel engines and has a much different additives profile. 5w30 is usually used in gasoline engines. Diesel oil is designed with high antiwear additives such a ZDDP.

Can I use 15w40 instead of 5w30?

5w30 flows better than 15w40. 5w30 provides best cold start properties. Using 15w40 instead of 5w30 will increase your fuel consumption because of more load on your engine’s crank. No, you won’t blow a head gasket, but 15W40 is too heavy an oil to use where 5W30 is required.

What is thicker 5W 40 or 15W 40?

5W is thinner than 15W when cold. Both will have a viscosity of a 40 grade. That cannot be said for both oils during the dead of winter. The 5W-40 will have a lower viscosity when the engine is started than the 15W-40; consequently the 5W-40 will start easier and lubricate quicker in the cold than the 15W-40.

Is 30W oil thicker than 15w40?

The mineral base of the oil meets the viscosity specifications at cold start and at operating temps. Multi-viscosity: The actual oil mineral oil base SAW weight is indicated by the lower weight reading — in this case, 15W, a much thinner base oil than 30W, ie, it will flow much more easily in cold weather.

What oil is thicker than 15W40?

A 10W40 oil will be thicker in the cold than 15W40 oil, but they will have the same viscosities at higher temperatures. The winter viscosity number dictates cold-start performance. A lower number indicates that the cold oil will be thinner, hence applying less static friction on the engine, and less drag.

When should I use 15W40 oil?

ADVANTAGE 15W-40 HEAVY DUTY DIESEL ENGINE OIL can be used with complete success in over-the-road diesel trucks, off-highway diesel equipment, farm tractors, and passenger cars and light trucks with diesel, turbo-charged diesel engines, or gasoline engines and is backward compatible with previous API Oil Categories.

What 15W40 means?

The first number 15W is the viscosity of the oil at cold temperature, and the second number 40 is the viscosity at 100 °C. The 15W40 designation means that the oil is a multigrade oil. It has the viscosity of 15W when cold and the viscosity of SAE 40 when hot. This means that one type of oil works in all temperatures.

Can I use 15W40 instead of SAE 30?

SAE 15W-40 can normally be used in place of SAE 30, but not the other way round. 15W40 is a multigrade oil whereas SAE 30 is mono grade oil. Multigrade oil works best in hot and cold season like an oil of given viscosity e.g. SAE 15 during cold season and SAE 40 during hot season.

Is all 15W40 oil the same?

No. There are several gasoline engines that use heavier oil. Specifically ones that feature hydraulic variable valve timing, and older models with hydraulic lifters. For example a BMW M50Tu may run 15w40 or even 15w50 in the warm summer months.

Which motor oil is thicker?

You might be familiar with terms such as “30-weight” or “10W-30” oil. Those numbers refer to the grade. The higher the number, the thicker the oil. The lower the number, the thinner.

Is 15W40 good?

ADVANTAGE 15W-40 HEAVY DUTY DIESEL ENGINE OIL has excellent soot dispersancy and wear control while providing outstanding protection against wear and corrosion. Its superior formula reduces sludge, protects against varnish formation and has superior anti-oxidation characteristics and high temperature stability.

Is 15W40 good for hot weather?

In tropical weather, most OEMs still recommend multi-grade products, such as SAE 15W-40, because the lubricant flows faster through the engine than a pure SAE 40 even at higher ambient temperatures.