Question: Can I Use 15w40 Instead Of 10w40?

Can I put 15w40 in my car?

No it won’t blow off,you will just wear your engine out quicker because the oil won’t flow to the moving parts as quickly .

No, you won’t blow a head gasket, but 15W40 is too heavy an oil to use where 5W30 is required.

Besides, most 15W40 oils are gor diesel engines..

What oil is thicker than 10w40?

The only difference between 10w30 and 10w40 oil is their thickness at engine operating (hot) temperatures. They will flow at the same rate during a cold startup since the starting viscosity is “10” for both formulations.

Can I use 15w50 instead of 10w40?

Yes- The numbers refer to the oil’s viscosity, (thickness) and the higher the number the thicker the oil. … The 15W50 has numbers higher than the 10W40, therefore the 15W50 is thicker both at ambient winter test and engine operating temperatures.

Which oil is thicker 10w40 or 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.

When should I use 10w40 oil?

Overall the 10W30 will be the more appropriate oil for cold weather and non-performing engines while 10W40 is perfect for warmer temperatures and older vehicles.

Does 10w40 hurt 5w30 engine?

The recommended oil viscosity for your vehicle, according to Kia documentation, is 10W-40. If you drive the vehicle in exceptionally cold weather, well below 32 degrees, you can use 5W-30 oil but even 10W-40 is still perfectly OK to use if outdoor temperatures are below freezing.

Can I use 10w40 in my Diesel?

DO NOT USE THAT OIL! There is a huge difference in diesel rated oil and gas engine rated oil. A reg 10w30 or 10w40 has no additives to help with Soot, and you need that. Diesel oils are made to clean better than those with a plain SL or SM rating.

What is 15w 40 oil used for?

Product Description. Mobil Gas Engine Oil 15W-40 is a premium fleet engine oil specifically formulated to provide reliable protection for trucks and buses using Compressed Natural Gas (CNG) or Liquefied Natural Gas (LNG).

What is the best 15w40 oil to use?

Comparison Table: Best Diesel OilsOilTypeConfigurationCastrol EDGE Euro Diesel Engine OilFull Synthetic5W-30Shell Rotella T4 Triple ProtectionConventional15W-40Red Line Diesel OilFull Synthetic15W-40Hot Shot’s Secret Stiction EliminatorOil AdditiveN/A6 more rows•Mar 27, 2020

Can I put 15w40 in my 6.7 Powerstroke?

Oil cap says 10w30. Manual says 10w30 recommended, 15w40 or 5w40 for severe. … There is not much fuel in the oil in the 6.7.

Is 0w40 better than 10w40?

The first number is a tested viscosity rating at cold temps. The thinner the oil is for starting a cold engine the better – and that is regardless of ambient temperatures. A 0W-40 oil is a much better alternative than a 10W-40 oil.

What does 10w40 mean?

The 40 in a 10w-40 simply means that the oil must fall within certain viscosity limits at 100°C. This is a fixed limit and all oils that end in 40 must achieve these limits. Once again the lower the number, the thinner the oil: a 30 oil is thinner than a 40 oil at 100°C etc.

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. … Mixing different oils will not improve the performance or efficiency of the engine in any way.

Is 10w40 synthetic?

Semi-synthetic oils such as 10W40 have long been the standard. Their base is refined crude oil, which is then blended with additives.

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.

Can you put 10w30 in a diesel engine?

The lubrication manuals of all the major brands of on road heavy diesel engines allows for using 10w30.

Is 15w50 thicker than 15w40?

oil is not this accurate, 15w50 is heavier than 15w40 even when cold. … thicker oil will have a harder time going through, if temp is you worry heavier oil is not the way to go, you need to go to synthetic.

Is 10w50 thicker than 10w40?

The difference between 10w40 and 10w50 is how thin the oil gets when it’s hot, 10w50 oil won’t thin out as quickly as 10w40 when oil temperature goes up, but it also might be too thick during regular running in cold temperatures (I think you’ll be fine though).

Can I mix 10w40 with 15w40?

There is absolutely no harm in mixing different grades of engine oil! All motor oils are required to comply with international standards which include a compatibility test. This means that any branded engine oil will mix with the standard test oil in any proportions and the mixture will still perform as specified.

Can I use 15w40 instead of 10w30?

High quality 10W-30 oils can perform as well, and better than industry-standard 15W-40 oils. The stated viscosity of a HDEO does not represent an exact viscosity, but rather a viscosity within a range on the SAE viscosity scale. … 10W-30 engine oils can fit anywhere in the range of 9.30cST to 12.49cST.

Can you mix 10w and 15w oil?

If both have the same specs bar the 10W then it wont hurt 10W means at 10 degrees and 15W 15 degrees outside temperature, so adding 10w wouldn’t do much in temperature wise as long as both are semi or so on with the same API specs.