You can pretty much mix any motor oil with another motor oil regardless of the viscosity (0W30, 0w40, etc.). The only thing you should try not to do is mix old-school dino oil with synthetic oil. Beside this, can you use 0w40 instead of 0w30?
Conclusion. Here you have it! Most motor oils would prove to very efficient when used in their own elements with the 0w40 just edging out the 0w30 when it comes to performance levels in an environment with a high temperature. Both motor oils are definitely up to the task.
Also Know, can I mix 5w30 with 0w40? A 0w40 has a HIGHER viscosity INDEX than the 5w30 and higher viscosity index is always preferred because of higher viscosity stability. Wrong! Yes,it is ok to mix the two. The 0w part is of lower viscosity than the 5w and will provide easier flow at start-up.
Secondly, can I mix 0w20 with 0w30?
Mixing at a ratio of less than 1 qt of 0w20 to 3 qts of 0w30 likely won't make much difference at all. As far as 0w20 versus 0w30, it will be basically the same weight cold, at startup. Still best to use the oil type weight recommended by the OM.
What oil is equivalent to 0w40?
Lifer. 5W30 will be just fine. Your owners manual probable sayd to use either 5w30 or 10w30. Check and see, but 5w30 (or even 10w30) will be juts fine.
Related Question Answers
Is 0w40 better than 5w30?
FUEL ECONOMY OF THE 0W40 AND THE 5W30 The motor oils in study are both fuel economical because they maintain a good level of thin oil viscosity, But the 5W30 maintains a better level in both hit and cold temperature and it is also generally recommended for being economical in fuel consumption. Can I use 0w 40 oil instead of 0w 20?
As 0W40 will retain it's visco Until the number before W is not changing, you can use the oil. 0W40 is better if you are living at a place where ambient temperature is high. If you are living at a place where ambient temperature is average then 0W40 and 0W20 will not make much of a diffrence. Can I use 5w30 instead of 0w30?
Most times, manufacturers will recommend the two oils ( 0W30 and 5W30) for you but choosing the best depends so much on the aforementioned factors. However, 0W30 can always be used in place of 0W50. A 5W oil thickens more than a 0W ( 0W is thinner). So, in Winter, 0W-30 will be the most suitable oil to use. What vehicles use 0w30 oil?
0W30, 5W30, and 0W40 are the OEM recommendations for most new (USA) Volkswagen-Audi vehicles, among others. 0w-30 oils are a tough sell because most of the oil buying public has a very hazy idea of what the "w" designation means. Is 0w 30 thicker than 5w30?
Oils are either thick or thin. Thick means the oil has a high viscosity while thin means the oil's viscosity is low. It is same as the case of these two oils; the 5W-30 is thicker than the 0W-30 motor oil. The 0W-30 is thinner or less viscous than the 5W-30 which makes it considered as better for saving more. Does 0w20 damage engine?
So moving one grade of oil is not going to destroy your engine or void your warranty. But you will want to use the right oil to not damage your engine. So don't go the wrong way and use something too thin when it is hot or too thick when it is cold. Most folks would be better off just using what the manual calls for. Which is better 0w20 or 0w30?
The 0w30 motor oil tends to offer you faster lubrication at the same time offering you a faster and much more efficient start. Although the 0w20 motor oil offers the same as they are both synthetic motor oil, the 0w30 motor oil tends to offer more. Will 5w30 hurt a 0w20 engine?
The only Honda I own recommends 10W-30, but 5W-40 may be used for better cold starting. Motor oil of 0W20 grade is supposed to be kind of like 5W20, but with better cold start performance in winter in colder climates. Once engine is warm, they should both flow like 20 grade oil. What happens if you mix 5w30 and 0w20?
Mixing 0w20 and 5w30 will typically give you a heavy 20-weight or light 30-weight. If you want to stay in the 20w range with the M1 you could get away with mixing up to about a quart and a half of the 5w30 with the 0w20. Can 5w20 be mixed with 0w20?
I wouldn't add any 5W20 if it is under warranty and calls for 0W20. Unless it is an emergency, to avoid running the car on low oil. If it is out of warranty then I wouldn't be too concerned. Once the oil is warm they are both 20 weight, so will behave identically. What does 0w20 mean?
It is labeled with two numbers and the letter W, such as 10W-40. The W actually stands for "winter" but basically means "viscosity when cold." So 10W-40 oil acts like SAE 10 oil when it's cold, but acts like SAE 40 oil when it's hot. 0W-20 oil acts like SAE 0 oil when it's cold, but acts like SAE 20 oil when it's hot. What can I use instead of 0w20?
If SAE 0W-20 synthetic oil is not available, SAE 5W-20 conventional oil may be used. However, it must be replaced with SAE 0W-20 synthetic oil at the next oil change. Why do new cars use 0w20?
Automakers including Honda and Toyota are almost exclusively switching from well-known 5W-30 and 10W-30 oils to low-friction, and pricier, 0W-20 synthetic oil. The slippery low-friction oils help squeeze every last bit of fuel economy out of the engine, but their synthetic blend raises the cost of routine maintenance. Which oil is better 0w20 or 5w30?
It readily means that the 0 oil will flow well and better at a cold temperature more than 5W-30 oils even while maintaining the same viscosity. The 0W-20 is said to be the best oil in the market because it helps to reduce environment hassle on waste oil disposal. Can you mix 5w 40 and 0w40?
It is perfectly OK to top off with a premium synthetic 0W-40 if filled with synthetic 5W-40. Your engine will not know the difference and its done all the time. Can I use 0w 40 instead of 5w 40?
The difference lies in their cold-weather viscosities, with 0W40 being quicker to circulate through your car's engine when cold. If you live in a part of the country that sees very cold winters then 0W40 is likely a better choice for your engine than 5W40. Can you mix 5w20 and 5w40?
Mix it with any oil you like. Yes, you can add a 40 or 50 to your 20. Is 0w40 good for winter?
M1 0w40 oil will work fine in the winter. The 0w part is what counts in cold weather, not the 40 part. So, no, it is not too thick at start up it is in fact, one of the least thick 40 grade oils at start up, at VERY COLD temperaturesas in -40* C, which also happens to be -40*F as in really really COLD. Is 0w40 thicker than 10w30?
The 0w40 doesn't get thicker as it heats up, it just doesn't thin out as much as 10w30 does at high temps. And yes, 5w50 is thinner at 10F than 10w30. Is 5w40 thicker than 0w40?
5w40 is thicker than 0w40 when it's cold, not thinner. Is 0w40 good for summer?
Our turbos need all the protection they can get in the summer and during hard drivingthe 0 and the 40 rating of MOBIL1's 0W40 Euro oil makes it a better oil to use in the summer AND in the winter. Can I use 0w40 instead of 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. When should I use 0w40 oil?
To be on point the 0W40 engine oil is the new age oil with all the properties to be suitable for your recent model cars or any kind of vehicles; be it diesel engines or gasoline engines, this oil aced the all. Which is thicker 0w40 or 5w30?
As you can see above, 0W40 at 79.9 cSt when cold, is definitely thicker than 5W30 at 62.4 cSt when cold. In fact, 0W40 is a substantial 28% thicker when cold, even though it is rated as a “0”wt when cold, which most people would expect to be thinner than a cold rated 5W. 
