How do I know what type of oil to use?

How do I know what type of oil to use?

There’s no substitute for reading your owner’s manual. It will list what type of oil the automaker recommends for your car. It may also recommend different oil depending on whether you live in a hot or cold climate. The most important thing is to use oil that’s the right thickness, or viscosity, for your car’s engine.

Is there a big difference between 10W30 and 10W40?

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. Using the correct viscosity oil eases starting, reduces friction, and slows wear.

Can I use 10W30 instead of 15w40?

Because 10W-30 is thinner than 15W-40 oil, its film strength can be weaker and it can be more prone to oxidation. High quality 10W-30 oils can perform as well, and better than industry-standard 15W-40 oils.

Can I use 5W30 instead of 15W40?

If the manufacturer’s recommendation for your engine allows you to use 5W30 oil, you can use either 5W30 or 15W40. If your engine only calls for 15W40, please only use that grade of oil; big engines are too expensive to risk.

What is the best 15W40 oil to use?

List & Comparison of the Best 15w40 Diesel Oils:

Product	Capacity	API
Ford XO-15W40-5QSD	5 Quart	C-4
Mobil 1 112786	1 Gallon	CK-4
Royal Purple 04154	1 Gallon	CI-4
Lucas Oil 10076-PK4	1 Gallon	CI-4

What oil is thicker 10w40 or 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. 10W40 oil will perform cold starts better than 15W40 oil.

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.