Question: Which Oil Is Thicker 5w30 Or 15w40?

Which oil is better 20w50 or 15w40?

A 15W40 is going to have a much better aditive package and will more then likely be less volitile.

15W40’s usualy are shear stable were most 20W50 shear badly some down to a 30Wt..

If you want a good 15W40 Delo 400 and Delvac 1300 are the easiest to find and have excellent formulas..

Is 15w40 synthetic?

Shell Rotella® T6 15W-40 Full Synthetic Heavy Duty Diesel Engine Oil is designed and formulated to provide improved performance compared to conventional and semi-synthetic Rotella 15W-40 products. It is suitable for virtually all modern low-emission heavy duty engines* and older hard-working diesel engines.

Why is diesel oil so black?

Quite simply, it’s soot, which diesel engines produce in much higher levels than their gas-burning counterparts. The soot enters the oil pan from the combustion chamber due to the gap in the piston rings, and it takes very little soot to turn the oil the inky black diesel mechanics are all to familiar with.

Can I use 10w 40 instead of 15w40?

Your best choice of multigrade 40 is a 0w-40, or a 0w-30 fully synthetic but a 5w-40 or 5w-30 will also be fine. 10w-40 will always be better than 15w-40 but both are 40 year old tech and won’t let your engine stay healthy for all that long.

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 oil is thicker than 15w40?

Motor oil grade represents the weight of the oil when cold, as well as at operating temperatures. Viscosity or thickness of the oil increases with rise in temperature. A 10W40 oil will be thicker in the cold than 15W40 oil, but they will have the same viscosities at higher temperatures.

Which is thicker 5w30 or 10/40 oil?

10w40 refers to synthetic oils which have a viscosity of 10 when in low temperatures and a viscosity of 40 when in the high temperature of 100 degrees Celsius. 5w30 is less viscous while 10w40 is more viscous. … The main difference between the 5w30 and 10w40 is the viscosity difference at different temperatures.

What type of oil is 15w40?

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.

What happens if I use 10w40 instead of 5w30?

If you use 10-w-40 instead of 5-w-30 specified by the manufacturer then the viscosity of 10-w-40 used by you will be higher and oil thicker than what is specified during winters. Similarly the oil viscosity will be higher and oil thicker than specified during summers.

Can you add 5w20 to 15w40?

Theoretically a 50/50 mix of 5W-20 and 15W-40 should yield a 10W-30. Since the 5W-20 is a semi-synthetic oil and meets the higher 930 Ford spec, mixing this oil with the high ZDDP content diesel oil could be the best of both worlds. Well, to me at least, this combo looks good on paper.

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 is the best 15w40 diesel oil?

Best Synthetic Oil for Diesel EnginesSchaeffer Oil SynShield Durability Advantage 15W-40 Diesel Oil. … Mobil 1 Synthetic Motor Oil 5W-30. … Liqui Moly Leichtlauf High Tech 5W-40 Engine Oil. … Shell Rotella T6 5W-40 Full Synthetic Diesel Engine Oil. … Motul 8100 X-cess 5W-40 Synthetic Gasoline and Diesel Engine Oil.More items…

Can I use 20w50 instead of 15w40?

Can I use 20w50 oil as a top up to my 15w40 engine oil? … It is best to use the same brand, type and weight of oil you put in at the last oil change. Unless you are at the fringes of temperature range for the 15w-40 oil, putting the 20w-50 in isn’t going to change the viscosity of the oil enough to damage anything.

Can you use 15w40 diesel oil in a gas engine?

It’s common for some owners of modified gasoline-powered vehicles to favor diesel oils over their gasoline counterparts. … Some want to run a 15W-40 oil in their gas engine, and it’s often easier to find a 15W-40 or similar viscosity of diesel oil than a gasoline motor oil.

Which is thicker 5w40 or 15w40?

The difference is in the viscosity during winter season. 5W40 oil is thinner than 15W40.

Which oil is thicker than 5w30?

10w30 provides sealing action in the engine due to the fact that it is thicker than 5w30 engine oil. Thinner at lower temperatures.

Can I go from 5w30 to 10w40?

I would not even put it in at all, but if you do, use it up this summer and then go back to 5W-30. Using 10W40 for one oil change won’t do any harm, it will take many years. You could also use it to top off the oil level between oil change, one quart won’t make a difference.

Can I mix 5w30 with 10w40?

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.