What is the difference between 10W 30 and 15W40?

Since 10W-30 is thinner than 15W-40, its film strength can be weaker and it can be more prone to oxidation. Therefore, high quality additives are needed to compensate for those weaknesses in order for 10W-30 to protect as well and last as long as 15W-40.

What is the difference between 10W 40 and 15W40?

A 10W40 oil will be thicker in the cold than 15W40 oil, but they will have the same viscosities at higher temperatures. A lower number indicates that the cold oil will be thinner, hence applying less static friction on the engine, and less drag. Oil settles at the bottom of the engine when it is cold.

What is the difference between 5W 40 and 15W40 oil?

5w40 is synthetic oil while 15w40 is mineral grade oil. The W is the suffix for the lowest winter temperature the oil has a working viscosity in. So you can cold start an engine with 5W in lower temperatures than an engine with 15W. 5W is thinner than 15W when cold.

What does 15W mean?

A 15W or 40W oil means it has a certain viscosity as mentioned in SAE J306 (standard for single grade oil or gearbox oil), more weight or ‘W’, more viscosity. 15W40 engine oil has to meet both the standards for 15W and 40W at their respective temperatures.

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.

Is 15W40 good for petrol engines?

Engine Armour 15W-40 is suitable for most petrol powered cars and some light duty diesel passenger vehicles including turbocharged and multi-valve engines. It provides protection to engine components for everyday driving conditions.

Which is better 5w30 or 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.

Is 15w40 good?

Specifically 15w40 is a very common choice that I’ve seen recommended often. The short answer : You should use the oil recommended by the manufacturer in most circumstances. Explaination: In most vehicles using a heavier weight oil won’t have any noticeable effect.