5 Best Oil For Kohler Engine (The Lubricators Review) in 2021

Deep inside the lawnmower, you’ll find a Kohler engine inhabiting the place. And, who doesn’t want their lawn mowers running well, right? What’s better than finding the right oil for your Kohler engine? 

After all, they’ll keep your engines running from time to time. Guess what? 

They don’t consume the oils that trucks and lorries do. Nope! 

In fact, they take a special type of oil. And we’ve taken the opportunity to discuss the oil that the Kohler engines take. And don’t worry, we hand-picked the best oil for Kohler engine for you.

You can trust our choice because our researchers have compared these products with thousands of similar products in the market. And then make the perfect list so that you don’t have to worry too much.

But that’s not where the train stops. We also made an entire buying guide to help you understand what to look for.

So, if you are intrigued then let’s start the journey-

Best Oil For Kohler Engine Reviews & Recommendations

best oil for kohler engines

1. Valvoline 881161 SAE Synthetic Motor Oil

At the very beginning of our list for the best Kohler engine oil, we have Valvoline 881161 SAE Synthetic Motor Oil. This one surely got a lot of praise from us and that’s because of its variation in both size and viscosity.

But that’s not all it has to offer. It surely has more in store-

However, let’s revert back a bit. You see, the sizes available for this product are a good option. You see, this gives you the freedom to choose between 1 and 5 quarts.

Most of the Kohler engines require about 1 quart of oil. So, if you want just enough for one-time use then buy this size. However, if you have a bigger lawn mower you can store up on oil by buying a 5 quart-sized oil.

Now, as for the viscosity, you’ll also have choices with this one. There are quite a few which you won’t get from most of the products in our list. This range includes 10W-30, 10W-40, 5W-30, 20W-50, and 5W-20.

Other than this, the Valvoline oil has auto-wear additives. These are actually enhanced. Plus, they work to form a condensed & long-lasting layer of anti-wear film. Guess what? This even works to ensure that the engine doesn’t automatically break down.

Moreover, you don’t have to worry about spillage or leaks. That’s because the product is tightly sealed in its bottle.

Adding to this, it also has detergents added to it. Now, we know that this might sound funny but this actually works to protect against sludge and deposits. So, your lawnmower’s engine will not slow down while working.

At the very end, we’ll like to point out that this engine lasts for 75,00 miles. So, even if you take out your lawnmower for a spin in broad daylight it won’t wear out too easily.


  • You can freely choose size
  • Viscosity can be altered to suit the temperature
  • It’ll serve a long time
  • This oil will not spill
  • Sludge and deposits won’t sit on the engine


  • It’s hard to carry around using hand

2. Mobil 1 120765 Synthetic Motor Oil

Moving on, we have the runner-up of the show: Mobil 1 120765 Motor Oil. This oil specialty is that it has the lowest viscosity of all the oil on the list. If you were looking for an oil with 0W-20 viscosity then this is the one for you.

However, that’s not what has to show on the table. It also has other viscosity amounts available too. For instance- 10W-30, 5W-20, 5W-30, 10W-40. Now, we will recommend that you go for 10w-30 for Kohler engines.

But the choice is really yours. You see, viscosity changes with temperature so it all boils down to where you live.

Other than that, it comes in 5 quart-sized bottles. So, you can rest assured that you’ll have enough oil for your little lawnmower. In fact, you just might have a bit too much to spare.

However, don’t throw them away. You can use them later when changing the oil.

But why did this oil land second place?

Well, the mileage covered by this oil is only 15,000 miles. So, its mileage covered is a bit lower than the winner. But if you can compromise a bit, it’s not too bad at the end of the day. It’ll still make your lawnmower go quite the way.

But like the first one, this oil also helps prevent deposits and sludge build-up. Hence, your Kohler engine gets to enjoy a long lifetime. This oil also works to enhance the engine life. They do so by protecting the engine from cold weather.

Lastly, we’ll like to add that this oil helps to resist oil breakdown. This does so by reducing the oxidation quantity.


  • Doesn’t let sludge or deposits sit on the engine
  • The lawnmower can travel a lot
  • Extends the engine’s life
  • Provides protection against cold
  • Offers low viscosity oil


  • Burns out in 6 weeks

3. Castrol 159BF4 03057 Synthetic Motor Oil

In third place, we have the Castrol 159BF4 03057 Synthetic Motor Oil. Now, Castrol is a pretty reputed brand name in the oil industry. And this particular oil’s specialty is the various size options.

You see, if you go with this product you can get 1,5, and 24 Quart sizes. Now, we know that some of you here are very particular about the sizes. Some people don’t want to waste the excess oil by letting them sit in the garage.

While others want a big size to store up for further use. No matter what you want, with this oil, you get the option.

However, we have to tell you that we mostly recommend oils that have 10W-30 viscosity. That said, this oil only offers 5W-20, 5W-30. From here we recommend that you use the 5W-30 viscosity one.

This one is more suitable for places with lower temperatures. Let’s say you live in a place that stays cold most of the time. During those times you need an oil that can tolerate the low temperatures.

But, why? Well, this is because at low temperature the viscosity increases. So, if the temperature is low enough it’ll work as great as the 10W-30 ones.

As for its other features, it can smoothen your lawnmower. Ensuring that it travels quite efficiently in your backyard.

At the same time, it also reduces engine wear with time. So, you can trust the engines to be running for a long time.


  • Provides protection to the engine
  • Works in low temperatures
  • Makes the lawnmower smooth
  • Ensure that the engine doesn’t wear out


  • It doesn’t have high mileage coverage

4. Briggs & Stratton 100028 Engine Oil

Next up, we have the Briggs & Stratton 100028 Engine Oil. So, what does this one have to offer?

Well, first of all, it’s the most budget-friendly oil on the list. However, that doesn’t mean that this oil doesn’t offer much. It surely does. Let’s see what it offers-

First of all, it’s the only SAE 30 viscosity oil on our list. Now, if you are wondering, yes there is a difference between 10w-30 and the SAE 30.

Some suit the SAE 30. While others don’t prefer it. You see, this oil can withstand higher temperatures thanks to this viscosity. But it isn’t that effective against low temperatures.

Thus, if you live in a place where the weather is a tad bit hot then this oil is the one for you. This one’s viscosity can make it bear the high temperature.

Also, like the other ones, this oil also works to keep the engine life up and running. So, your lawnmower can have a healthier and longer life in your sweet little garden.

Besides, it’s a synthetic oil that works perfectly with Kohler engines. We always recommend you to use synthetic oil because they keep the small engines going really well.


  • It’s affordable
  • Works at a high temperature
  • Ensures long engine life


  • It’s not available in large quantities

5. Kohler 25 357 06-S 25 357 06-S Motor Oil

Lastly, we have the Kohler 25 357 06-S 25 357 06-S Motor Oil. Now, this was our last choice but remember this oil did beat all the others in the market. And besides, we love it because it comes in a pack of 3. So, you can buy a bunch at a time.

However, that’s not all it has in store for us-

First of all, let’s talk about viscosity. Now, we know that this product doesn’t offer many options for viscosity. However, it comes in 10W-30 viscosity. And that’s the perfect viscosity for small engines like Kohlers.

At the same time, you see, these small engines don’t require much oil. 1 Quart is enough for the lawnmower that works in your garden. Besides, if you want you can always buy 3 at once for much longer usage.

Besides this, the Kohler 25 357 06-S 25 357 06-S motor oil can tolerate up to 204 degrees celsius. And that’s quite a high temperature.

Thus, if you were planning to make your lawnmower work on hot summer days then this is the one. The sun won’t be able to make it stop working.


  • You can buy 3 at once
  • It can withstand high temperatures
  • Engines don’t produce sound from their usage


  • It isn’t tightly sealed

Oil for Kohler Engine – Buying Guide

Woah, that was a lot of talk for oils. But are you still confused about what to look for?

Well, then maybe we can help you. In this section, we’re going to discuss all the primary things you should know about before buying oil for your Kohler engines. So, let’s get to it-


The first crucial aspect of engine oil is its viscosity. Now, what is the viscosity in oil?

Well, the viscosity of the oil is the measure of how easy it is to pour the oil at a certain temperature. In simple terms, viscosity is the thickness of the oil. You ever see any oil that runs quite easily because they are things?

That happens because their viscosity is quite low. Other than that, the thicker the oil the more viscous it is. As for the engine oils, they are measured with W. This stands for winter.

You’ll see that most of the viscosity is given by 5W-30. The number 5 represents the maximum viscosity of the oil at low temperatures. Now, the lower the number the better is its performance at lower temperatures.

On the other hand 30 in 5W-30 represents how much the oil must fall within a certain viscosity limit, at 100 degrees celsius. So, if this number is lower it’ll be much thinner.

As for the Kohler engine, we recommend you to buy an oil that has 10W-30 viscosity. They work great on the most premium Kohler engines such as Command, Command Pro, CS, Courage, Aegis, and Triad OHC engines.


Now, we know that we gave you one specific viscosity. However, you need to note that this viscosity is only meant for temperatures higher than 32 F.

So, if you lie in a place where the temperature is higher than 32 F then this is the oil for you. However, this is for the engines that were mentioned earlier.

Now, if you have a K-Series or Magnum engine you can use the SAE-30W oil. They work on these Kohler engines at a temperature above 32 F.

At the same time, you can also use SAE 30 for non-K series engines if the temperature is higher than 50 F.

Amount of Oil

Another thing to note is the amount of oil you’ll be needing. Now, this completely depends on how long you run your engines. But to have an estimation you should know how much the Kohler engines can store.

Well, to be fair there are different types of engines for various purposes. So, they have different limited capacities.

Now, most of the Kohler engines require 1 to 3 quart of oil. So, you need to buy a sufficient amount of oil so that you can reuse the oils every time it runs out.

Types of Oil

Now, there are different types of oil available in the market. Some are pure oil while others are a blend. But our target is to figure out which one’s the best for Kohler engines.

Well, the best one is synthetic oil. Now, you’ll find that all the products mentioned in our list are synthetic oil. So, you can pick any and they will be suitable for your Kohler engine.

Additives in the Oil

Lastly, look out for additives. Most of the oils use different additives to make the oil reduce friction. However, this affects the engine in the long run.

They can be quite harmful to the engine over a span of time. But they do not show any major signs of despair if used in small amounts. However, they are still not recommended.

How Does Temperature Affect Viscosity Of Oil?

No matter what oil you end up buying, the temperature will have its effect on the oil. So, it’s nice to know how the temperature can affect the viscosity of the oil.

Firstly, let’s discuss what viscosity actually means. You see, viscosity is the resistance to flow in any sort of liquid. In other words, it is kind of like the friction of the liquid world.

So, if the oil’s viscosity is lower it’ll flow more easily. And if the viscosity is higher, the oil will be thicker and it’ll flow less.

Now, this viscosity changes with temperature. You see if the temperature increases then the viscosity decreases. And vice versa. In other words, the viscosity of oil and temperature have an inverse relationship.

But you should note that different oil is affected at a different rate by the temperature. So, the oil you might pick may have a different change in its flow because of its chemical properties.

How Frequently Do Kohler Engines Need To be Oiled?

The Lawnmower engine needs a refreshment of oil every now and then. Otherwise, the engines will keep on burning the dirty oil. And in no time it’ll go bad.

So, how do you properly maintain your Kohler engine?

Well, you need to replace the oil filter every twice a year. And for the oil, we recommend that you change them after every 50 hours of usage.

This way, the lawnmower will stay healthy and will run for ages at a time. 

Frequently Asked Questions

Question: Is it OK to use car oil in a Kohler engine?

Answer: You can use car oil in the Kohler engine. However, it needs to be of a premium brand. For instance, top-quality SAE 30 car oils will work on Kohler engines used for lawnmowers.

Question: What happens if you don’t change the oil in the Kohler engine?

Answer: Now, if you decide to not change the oil in the Kohler engine then the oil will start to get dirty. And the engine will run at that state. This will cause the engines to wear out. Plus, once the oil runs out the engine will be dry.

Question: Is SAE 30 the same as 10W30?

Answer: Well, SAE 30 and SAE 10W-30 are the same at a very high temperature. However, at normal temperature 10W30 has 10W viscosity /thickness and SAE 30 viscosity at high temperatures. In other words, they are not the same.

Question: Are synthetic oil good for Kohler engines?

Answer: Yes, synthetic oil works great on small engines like Kohler engines. They provide better viscosity, wear, and deposit control, and low-temperature fluidity which the other engines cannot provide.

Question: Is there a difference between small engine oil and car oil?

Answer: There are several differences between small engine oil and car oil. For instance- the level of zinc varies between both the oils. Kohler engines contain higher zinc levels than car oils.

To Sum Up

Well, that sums up our topic for the day: best oil for Kohler engine. Now, remember folks, the key thing is to ensure that the oil is synthetic and not your regular standard oil.

And as long as the viscosity range is alright, you should be good to go. Anyway, we wish you the best of luck with your engines. See you again. Toodles!

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