Kawasaki FR730V Oil Type: Guide to Choosing the Best Oil

Written by

Charles Bolte


Vernon Hoppe 


Owning the Kawasaki lawn mower means having a versatile engine oil type is a must. That way, the vehicle can function no matter the weather.

So, what would make the best Kawasaki FR730V oil type? With oil viscosity and temperature requirements taken in mind, a few top suggestions are SAE 30, SAE 5W-30, SAE 10W-30, and Vanguard 15W-50.

Kawasaki FR730V Oil Requirements


When it comes to buying oil for Kawasaki FR730v, the common choice is usually either synthetic oil or blends. These types can perform well in a wide temperature range. That aside, choosing the correct viscosity grades is also essential to ensure the oil will flow despite the weather changes.

As the Kawasaki FR703V features a 4-stroke engine, it’s only natural that you pick 4-stroke oil as well. For your information, this oil does not burn with the fuel but circulates the engines instead. Therefore, it tends to contain additives, such as zinc, to protect the motor from wearing out.

Regarding technicalities, it is also vital to select compatibility and API, especially since the engine is involved. Only a few in those categories are compatible with the lawn mower.

Here’s an overview of the oil requirement for the Kawasaki FR730V:

Type of oil Synthetic oil and blends
Viscosity Grade 5W-30, 10-W30, 10W-40, 15W-50
API SF, SG, SH, SJ, and SL
Compatibility 4-stroke small engine

Recommended Oil Options for FR730V Engine

With the data above, people can already narrow down the selections for the best oil for the FR730V. However, there are still plenty of viscosity grades that are ideal for usage. Let’s have a rundown with the list provided!

Viscosity Grade Working Temperature
SAE 30 40 °F to 100 °F
SAE 5W-30 -22 °F – 90 °F
SAE 10W-30 0°-100 °F
Vanguard 15W-50 20°-130 °F

1. SAE 30


SAE 30 is ideal for FR730V as it is compatible with small motors like lawnmowers. It is also efficient in hot weather, which explains the 30 viscosity level.

Unlike others, it’s a monograde oil type, meaning that it’s suitable at a specific temperature range only—in this case, it’d be 40 °F to 100 °F. As such, I’d recommend this for people in regions that are warm year-round.

2. SAE 5W-30


Another oil included in our oil alternatives is the SAE 5W-30. Unlike SAE 30, this engine oil is multi-graded. To be specific, its viscosity rate ranges from 5 to 30, with the “W” standing for “Winter.”

As you can likely guess, the SAE 5W-30 is best used in cold weather. It can reliably start your engine when it’s -20°F to 90°F. That said, it’s not uncommon for SAE 5W-30 to flow even at -22 degrees Fahrenheit.

Related article: 5W-30 vs. 0W-30 oil – Which is right for your car?

3. SAE 10W-30


In terms of thickness, this oil type is your go-to product. Since it is thicker than the previous oils, it can perform well in higher temperatures—up to 100℉. However, for below-freezing temperatures, it can be slightly tricky.

Although it can tolerate temperatures as low as 0°F, anything lower than that will render it useless. As such, I’d suggest you use this for heavy-duty tasks in warm regions only.

Read more: SAE 30 vs 10w30 comparison.

4. Vanguard 15W-50


One specific oil type Kawasaki FR703V owners can use is Vanguard 15W-50, which is also designed for small engines like lawnmowers. It’s great for commercial and outdoor use, particularly in environments with a temperature range of 20°-130°F.

Factors to Consider When Choosing the Oil Type

It’s vital to have a frame of reference when choosing motor oil for your Kawasaki FR703V. That way, the selected oil can reliably cater to your personal needs. You can refer to the factors below to know what aspects to keep in mind:

1. Weather


The primary factor that people must observe is the weather. Since there are several options for viscosity grade, people should select the best product that mirrors this factor.

Furthermore, choosing products based on this factor can ensure the oil and engine’s longevity.

2. Vehicle compatibility


Another factor that people must check is whether the oil is compatible with the specification required by the model. One way to verify is by checking the lawn mower’s manual for the needed details. (e.g., API, viscosity grade, engine type, etc.)

Doing so should help the lawn mower to function well, as the engine will not be compromised from using the incorrect engine oil.

3. Oil Type


For Kawasaki FR730V, you have two options when it comes to oil type:

  • Synthetic oil: this type provides consistent performance and a wide temperature range. Because it’s highly refined, it offers excellent engine protection and can last longer between oil changes. One downside is that synthetic oil is rather expensive.
  • Synthetic blend: 20% to 30% of this oil type’s formula features synthetic oil, with the rest being conventional oil. As such, it does offer improved performance and protection, although not as much as synthetic oil. The blend has the distinct advantage of being affordable.

Frequently Asked Questions

Instructions for an Oil Change Procedure

Oil change for lawn mowers usually occurs once a year or every 50 hrs of total usage, whichever comes first. Let’s have a rundown on what to do when it’s time to change the Kawasaki FR730V oil.


  1. Insert the dipstick all the way down into the oil tank before pulling it out. If the oil is under the “low-level” mark, it’s time for an oil change.
  2. Drain the old oil onto a container.
  3. Unplug the oil filter and attach a new one.
  4. Refill by adding the suitable oil.
  5. Check the oil level using a dipstick to ensure it’s the correct amount (between low level and full mark).
  6. Turn on the mower for a few minutes and let the lubrication flow

Does the FR730V have a 24 HP Kawasaki max power?

This model of lawnmower from Kawasaki has a maximum horsepower of 22.4 per 3600 RPM. Even if it didn’t reach 24 HP, it is still a heavy-duty machine for daily tasks. Plus, the compression specs help with the performance of the machine.

Read more: Oil type for 23 HP Kawasaki engine. 

How much oil capacity and oil weight can the FR730V can handle?

The Kawasaki FR730V is capable of housing 2.2 liters of oil. Meanwhile, the dry weight is estimated to be 40 kilograms.


Kawasaki FR730V oil type is easy to find if the buyer knows the requirement. Simply put, you should prioritize 4-stroke synthetic oil or synthetic blend with a viscosity grade compatible with your region’s average temperature range.

By choosing the correct oil type and viscosity, you’ll be able to maintain the lawnmower’s performance and longevity. Don’t forget to change the oil regularly, especially if you want an engine that will work for years to come.

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