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Can I Use 5w30 Instead Of 10w30 In My Generator? (Everything You Need To Know And More)

Choosing the appropriate engine lubricant is critical to getting the most out of your generator, extending its lifespan, and saving money.

The trouble is that things can get confusing, especially when you go to your local garage and discover that they only have a limited range of lubricants!

So, a question might arise in your mind, can I use 5w30 instead of 10w30 in my generator?

Can I Use 5w30 Instead Of 10w30 In My Generator

What’s the difference between 5w 30 and 10w 30? After reading this extensive guide, you can easily differentiate between both motor oils, 5w30 and 10w30, and know when to use either of the available engine oils.

To make it easy to understand, go through the guide to opt for the right engine oil per your generator engine requirements. 

Can 5w30 Be Used Instead Of 10w30 In My Generator?

The principal contrast in the range of 5w30 and 10w30 engine oil includes the most reduced temperature they can work.

Both 5w30 and 10w30 are multi-grade engine oils, accessible in both the customary and manufactured choices.

The two of them work hard to improve your motor to develop execution further and expand its life span.

The oil variations have added substances to develop consistency further while providing dual thickness grade.

 Although the 5W-30 and 10W-30 oil have similitude, they have contrasts that put them aside from each other.

Read further to check out the differences.

What Do The Numbers And Syllables In The Name Mean?

The numbers and certain syllables define the useful functionality in desired weather conditions.

For instance, a number before the letter “W” indicates oil weight in cold weather, while the number after the letter “W” refers to the desired weight of engine oil in the motor for active power generation. We are left with the letter “W,” which means winter.

So, in simple terms, the smaller the number rating, the easier the oil will flow.

So a zero will pour more easily than a five, and a five will flow more easily than a ten.

The greater the second number, the higher the chances of the oil withstanding hotter temperatures before it begins to thin out and become less useful.

When Should You Use 5W30 Or 10W30

The decision to choose the oil type is primarily dependent upon the climate of your surrounding and the ease of flow. For colder temperatures, the 5W30 will be a better option as the thickness will make it difficult to flow particularly when starting the engine for the first time in the morning. In warmer regions, the thickness of 10W30 will make it easier to flow. In simple words, you should be using 10W30 when it is hot outside and when it is cold, your go-to option for the better oil should be 5W30. If the temperature reaches even higher levels, the 10W30 will not be very efficient and you should go with the 15W40 oil.

Can You Mix 5W30 & 10W30 Oil? Will It Damage Your Engine

One of the most common queries that many people have about engine oils is whether they can mix the two oil types or not. The worry behind this question that readers want to resolve is whether mixing oil will cause any damage to the engine or not. It is safer to use the mixed oil and it will work just as fine as individual oil type.

The reason behind mixing oil is to have the good of both oil types and improve the downsides of both. Some users will find that the longevity of the generator and its economy will be reduced by using mixed oil but using it for a slight will not cause any severe harm to the engine and its performance. But you should not make it a habit of mixing both 10W30 and 5W30 oil types as combining the two will combine the downsides of both and you will see a major decrease in your engine longevity.

When Should You Use Both?

While concluding which oil you should utilize, consider how rapidly it streams. Remember that 10W30 is more viscous while cool, implying that it will move more leisurely than 5W30 when you initially fire up your motor interestingly that day.

As both sorts of oil have a similar consistency, the oil will play out the same way once it arrives at working temperature.

Hence, where conditions are generally similar, 5W30 oil will assist your vehicle in firing faster. 5W30 may be a definitive decision during freezing months.

Hotter districts are more secure in utilizing the thicker 10W30.

Most vehicle and generator producers will give data concerning the best oil to utilize, and these will tell you to reach what is all right for you to place into your motor.

It won’t guarantee that the engine gets the ideal security for long-haul execution, yet it should likewise streamline the mileage, enabling you to go further before running short.

The Benefits Of 5w30 Vs 10w30? (10w30 Vs 5w30)

  • Benefits Of 5W30

To opt for a versatile vehicle oil suitable for most engines, we suggest going for 5w30 oil, among the best motor oils for many cars and engines.

This oil is more “liquid” at lower temperatures, making the method involved with turning over your chilly motor a lot simpler.

It’s more eco-friendly and streams quicker also. It is suggested for use at – 31°F up to 95°F/ – 35°C up to +35°C (outside temperature).

  • Problems With 5W30

The biggest problem with 5W30 like all other synthetic engine oils is that it includes friction modifiers for conserving the energy of the motor. The friction modifiers although help in conserving energy but they increase the chances of ruining your clutch. For older engines and gaining motors, the friction modifiers amplify the risk of wedge loss.

  • Benefits Of 10W30

10w30 oil protects parts of the engine from rust. While still very “liquid,” this oil is somewhat thicker at lower temperatures than 5W30, making the method involved with turning over your motor somewhat more enthusiastic.

It is suggested for use at – 13°F up to 95°F/ – 25°C up to +35°C (outside temperature).

It’s thicker, less eco-friendly, and gives better fixing activity. Weighty burden motors typically utilize them.

  • Problems With 10W30

10W30 oils are less fuel efficient and you would have to use an increased amount for running your engine efficiently. In simpler words, using the 10W30 will pose trouble with starting the engine and you may have to start your engine every now and then which could be really annoying at times, particularly during a long ride.

  • Which Oil Is Better?

There is no ideal engine oil for all situations and the better oil for your engine will depend upon your surrounding temperature. The 10W30 is a highly viscous and thicker oil which is better for warmer temperatures and areas but it cannot always be used. For beginners, a low-viscosity oil is a suitable option as it will easily flow to all parts of your engine. All engines running on 10W30 can be replaced with 5W30 and there will be no difference in longevity or performance of the engine. But replacing the 10W30 with 5W30 is not always a reasonable option. Therefore, the 5W30 is a better option and also the more expensive one.

Can I Use 5w 30 Instead Of 10w 30 In My Generator?

Indeed, you can utilize 5w30 rather than 10w30 for the efficient running of your generator with ease.

In contrast to their nature, you will find both of these oil with multi-grade nature and similar weight at working temperature,30.

The 5w30 oil streams much better in winter than the 10w30 oil.

This oil is a better option because it is multi-grade and suitable for various temperature ranges.

Because of their identical weight, the 5w30 and the 10w30 have a comparable level of execution and safety, while the generator opts for a high temperature.

The 5W oil is more slender than the 10W, making it a better option for cold conditions.

Despite the same weight, you can compare the working functionality by compatibility with the cold temperature.

Not with-standing, follow your generator’s client’s manual and utilize the oil following the specification mentioned by the generator manufacturer.


1.   When not to use 5w30 in your generator?

The 5W30 oil should not be used during summer, particularly on hot summer days this is because the heat will break down the oil and it may perform inefficiently. Thus the 5W30 oil is not fit for use on hot summer days.

2.   Is SAE 30 the same as 10w30?

SAE 30 is a highly viscous oil that is used for maintenance works and maintains viscosity even at high temperatures. Being a mono-grade oil, the SAE is a highly viscos oil while the 10W30 is thinner while n cold and becomes thick in hotter temperatures.

3.   How much oil do generators take?

The fuel consumption level of different generators varies based on different models and the typical portable generators will hold 400 to 700 milliliters of oil. You can check the user’s manual to know the exact fuel level of your model.

4.   Can I use 10w40 in my generator?

All those generators using 10W30 oil can also make use of 10W40. To know the exact compatibility of the oil type you need to check the user’s manual and don’t use it otherwise. If your user’s manual suggests using 5W40 oil don’t try to add 10W40.

5.   Is 10W-30 thicker than 5W-30?

The thickness or viscosity of the oil depends upon the temperature and considering the same temperature let’s say 100-degree centigrade or 212 degrees F, the 10W 30 and the 5W 30 will have the same thickness and same viscosity. For colder temperatures, the 10W Oil will have higher viscosity and thickness.


We strongly believe that you can now easily answer the query, including, can I use 5w30 instead of 10w30 in my generator? Both 5W30 and 10W30 engine oil has a comparable thickness when the generator arrives at its working temperature. In any case, the primary contrast in the range of 5w30 and 10w30 comes from their consistency at low-temperature. A 5w30 works better at low temperatures contrasted with a 10w30 engine oil. For instance, the change will utilize your generator throughout the cold weather months; exchanging between the oil grades isn’t fitting. Continuously allude to your generator’s producer’s rules before picking the oil grade.

See More:

How To Keep Generator Battery Charged
How To Use A Generator Transfer Switch

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About the author

Anthony Miller

Hello Guys! I am Anthony Miller, a high dynamo, communicative author, and editor of the Renewable Cop, always providing amazing, engaging, informative, unique, highly researched, and verified content based on all sorts of generators. Read more.

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