SAE 30 vs 5w30 Motor Oil: Which one is better?

Oil is the lifeblood of your motor or lawn mower, and its proper functioning is essential to the aesthetic health of your grass. You probably wouldn’t enjoy having a lawn if you didn’t put in the effort to keep it looking nice and tidy. That also applies to your motor and your lawnmower. If you want your engines to perform and last as long as brand-new ones, you need to check the oil regularly.

sae 30 vs 5w30 motors oil
SAE 30 vs 5w30 Motor Oil

Oil was used in the motor’s engine whenever it was needed. Thus, its replacement is required, or else the engine may overheat. Which of these motor oils do you think is the best? Now I’m going to compare SAE 30 and 5W30 motor oils. I’ll look at things like temperature range, the thickness of the fluid, and how long an engine lasts to draw my conclusions.

SAE 30 vs 5w30 Comparison:

PropertySAE 305W-30
Viscosity (thickness)ThickerThinner
Viscosity indexLowerHigher
Recommended temperature rangeHigherLower
Suitable for use inOlder engines, small engines, low-stress enginesModern engines, high-performance engines, cold climates
Protects againstLess wear and tearMore wear and tear
Fluidity at low temperaturesReducedImproved
Fuel efficiencyLowerHigher
PriceTypically cheaperTypically more expensive

SAE 30 Vs 5w30 Engine Oils

Product Name Product Detail Product Link
SAE 30 Motor Oil Cheap
Single Grade Oil
Best for Lawn Mower
Helpful for Hot temperature
Check Price
5W30 Motor Oil cheap as well.
Multiple Grade Oil
best for car engine
It helps with different temperatures.
Check Price

What is SAE 30 Engine Oil And Its Characteristics?

SAE 30

First of all, we understand the SAE 30. Here, SAE stands for  Society of Automotive Engineers, and the mean of 30 is related to that viscosity characteristic. A numerical code system has been developed by the Society of Automotive Engineers (SAE) to grade motor oils based on their viscosity characteristics. SAE viscosity grades start from 0W to 60 and represent 11 viscosity grade oils like; 0W, 5W, 10W, 15W, 20W, 25W, 20w, or 20, 30, 40, 50, and 60. prefixed with a W to signify that they stand for “winter” (not “weight”) or cold-start viscosity, which occurs at lower temperatures. 20 viscosity oil comes with or without W, which indicates a cold or hot viscosity grade.

Single Grade Oil

As we talked about above, it comes in different viscosities of SAE. You need to know which one is the thickest or thinnest. SAE supplies those oils in 11 grades that range from 0W to 60. 0W is the lowest number that shows the thinnest motor oil viscosity, and the highest number is 60, revealing its thickest oil viscosity.

Oils are given an SAE viscosity grade of 0W, 5W, 10W, 15W, 20W, or 25W based on the coldest temperature through which they flow. Because of this, oils with lower viscosity grades have a lower minimum heat dissipation.

The Society of Automotive Engineers (SAE) determines the viscosity grades of 20, 30, 40, 50, and 60 of oil based on where it falls within the range of possible values while the temperature is above freezing. These grades correspond to the oil’s shear rate.

SAE 30 Lawnmowers And Snow Blower Engine Oil

You really ought to do that in at least 90 percent of situations. Only lawnmowers and generators that are rarely used and are never started in subfreezing temperatures should be fueled with the best SAE 30 oil, as this grade of fuel is the only one that is truly suitable for them. SAE 30 oil gets too thick to use when the temperature drops, but SAE 5W-30 oil is made to get less thick.

SAE 30 Pros and Cons

  • Suitable for older engines
  • Suitable for small engines
  • Higher viscosity index
  • Less expensive than 5W-30
  • Not suitable for modern engines
  • Not suitable for high-performance engines
  • Not suitable for cold climates
  • Provides less protection than 5W-30

SAE 30 Motor Oil Products:

Pennzoil Conventional SAE 30 Motor Oil

Editor Choice
Pennzoil Conventional SAE 30 Motor Oil


  • Viscosity: SAE 30
  • Brand: Pennzoil
  • Liquid Volume: 32 Fluid Ounces
  • Package Information: Bottle
  • Vehicle Service Type: Small engine( Car, UTV, Truck, Mower )

Shell Rotella T1 Conventional SAE 30 Diesel Engine Oil

Shell Rotella T1 Conventional SAE 30 Diesel Engine Oil


  • Viscosity: SAE 30
  • Brand: Shell Rotella
  • Liquid Volume: 128 Fluid Ounces
  • Package Information: Bottle
  • Vehicle Service Type: Truck

What is 5W30 Engine Oil And Its Characteristics?


Examining the name is the first order of business. Winter is denoted by the letter W in the word 5W30. As you can see, the letter W is situated between two numerals that show a viscosity of between 0 and 30. Because of this, 5W30 motor oil is capable of providing multi-grade viscosities regardless of the temperature of the engine.

Multigrade Oli

In the cold, a certain oil will have a high viscosity, but at the engine’s operating temperature, its viscosity will decrease. Most single-grade oils have too great of a viscosity difference between their cold and hot states. These additives transform the oil into motor oil that can be used in a variety of vehicles. The goal is to make the multi-grade oil behave like a base grade when cold and like a second grade when hot.

5W30 Automobiles, Airplanes, And Other Machines Engine Oil

This is a quality that is extremely valuable in automobiles, airplanes, and other machines that are required to work hard throughout the entirety of the winter months. Because it keeps a reasonable viscosity even when the temperature is low, 5w30 is a great help to cold engines that are having trouble starting. This is because 5w30 maintains a reasonable viscosity even when the temperature is low. This kind of oil is rarely utilized in mowers because the majority of lawn maintenance occurs during the warmer months. In spite of this, you shouldn’t completely write it off because it might work in your mower.

5w30 Pros and Cons:

  • Suitable for modern engines
  • Suitable for high-performance engines
  • Suitable for cold climates
  • Provides excellent protection
  • Not suitable for older engines
  • Not suitable for small engines
  • Lower viscosity index
  • More expensive than SAE 30

5W30 Motor Oil Products:


SAE 30 and 5W30 are both types of motor oil, but they differ in viscosity or thickness. SAE 30 is a thicker oil, while 5W-30 is thinner.

Recommended Temperature Range

SAE 30 is typically used in engines that operate at higher temperatures, such as those found in older vehicles or in small engines like lawn mowers and chainsaws. 5W-30, on the other hand, is designed to flow more easily at lower temperatures and is often recommended for use in modern vehicles and in colder climates.

Suitable for Use in

SAE 30 is suitable for use in older engines, small engines, and low-stress engines. 5W-30 is suitable for use in modern engines, high-performance engines, and in colder climates.

Protects Against

SAE 30 provides good protection against wear and tear, while 5W-30 provides excellent protection.

Other Factors

In addition to these differences, SAE 30 has a higher viscosity index, which means it is less prone to thinning and thickening over a range of temperatures. It also has a moderate level of fuel efficiency, while 5W-30 has a good level of fuel efficiency. In terms of cold start performance, 5W-30 is superior to SAE 30.

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