Both the contenders are synthetic engine oils made to provide maximum performance in severe weather conditions. Both the contenders have very reliable chemical and shear stability with decreased evaporative loss from the engine oil. They both are specially made for 4-stroke motorcycle engines.

Designed with Ester Core Technology, 300V very efficiently protects the engine from wear and corrosion.

It has a bigger temperature range with a lower pour and higher flash point than its competitor.

Due to this, it offers very reliable performance in extreme weather conditions.

It meets the JASO T-903 and API SL standards.

Amsoil has a very efficient engine cleaning ability due to superior detergents. It provides convenient performance in cold climate conditions.

It meets JASO MA2 and API SN standards. It also offers a very good environmental adaptability along with extended drainage intervals.

Compared to Amsoil 4T, 300V offers better performance in a high-temperature environment and is more fuel efficient. It offers premium wear protection and meets a more advanced JASO standard. When talking about Amsoil, it provides longer oil drainage intervals and better cleaning ability. It has a broader API standard range and meets the latest API standard.

Assessment Table

Specifications	300V Factory Line Road	Amsoil 1 4T Performance
Engine Type	4-Stroke Motorcycle Engine	4-Stroke Motorcycle Engine
Oil Type	100% Synthetic	100% Synthetic
Viscosity Grades	SAE 5W – 30, 15W – 50, 5W – 40, 10W-40, 15W – 60	SAE 10W – 30, 10W – 40, 20W – 50
JASO Standard	T-903 (MA/MB)	MA2
API Standard	SL	SN
Cost (10W – 40)	25.5 $ (1 liter)	11.1 $ (1 liter)

Viscosity Evaluation

The two factors are always to be analyzed while comparing the two contenders in terms of viscosity, they are the kinematic viscosity and viscosity index.

Kinematic viscosity measures a fluid’s internal resistance required to flow under gravitational forces.

It’s simply a quantity representing the dynamic viscosity of a fluid per unit density.

On the other hand, the viscosity index is the unitless measure of a fluid’s change in viscosity due to temperature change.

As the temperature increases, the kinematic viscosity decreases, and this change depending on the viscosity index varies from liquid to liquid as every engine oil has a different viscosity index.

At low and high temperatures, the kinematic viscosities of 300V are comparatively lower than its competitor.

It makes its circulation inside the engine relatively easier and eventually leads to better fuel efficiency. Amsoil, on the other hand, also has a lower viscosity index than its competitor which makes it superior in this category.

This is because the lower the viscosity index value, the more change will occur in the kinematic viscosity of 300V relative to temperature change.

It suggests that its environment adaptability would be relatively better than its rival.

Parameter	300V Factory Line Road (10W – 40)	Amsoil 1 4T Performance (10W – 40)
Viscosity Index	160	154
Kinematic Viscosity at +40 °C	82.10 mm²/s	98.40 mm²/s
Kinematic Viscosity at +100 °C	13.10 mm²/s	14.60 mm²/s

Lubrication Standards

300V meets the API SL while Amsoil meets almost all the major API standards such as SN, SM, SL, SJ, SH, and SG.

Its superior API SN standard makes Amsoil more advanced engine oil in terms of better emission protection and compatibility with ethanol fuels.

Amsoil meets a wider and latest range of API standards as it is backward compatible with previous API standards as well. It makes it superior to its competitor in this category.

When talking about JASO rating, 300V meets the JASO T-903 (MA/MB) standard while Amsoil meets MA2 standards.

300V meets both the JASO MA and MB standards which means that they can be used in both single-unit engines and also in bikes that use separate oils for the engine, clutch, and gearbox.

Survival in Extreme Temperatures

Pour and flash points are the upper and lower bound of the temperature range where the engine oil gets burned down and starts to lose its flowing ability respectively.

At higher temperatures, the engine oil will start to burn at a specific point known as the flash point.

At lower temperatures, the temperature point at which it starts freezing is referred to as the pour point.

300V has a higher flash point than its competitor which means that its ability to flow in hot weather would be comparatively superior.

But on the other side, Amsoil has a lower pour point than its opponent.

This means that it would flow more effectively than its competitor in cold climate conditions.

Parameter	300V Factory Line Road (10W – 40)	Amsoil 1 4T Performance (10W – 40)
Pour Point	-36 °C	-37 °C
Flash Point	250 °C	234 °C

Cleaning Ability

The main cause of impurities in the engine oils is an unavoidable reaction known as Oxidation which breaks down engine oil at the molecular level.

Oxidation reduces engine oil’s effectiveness and increases the risk of engine failure by forming sludge.

Cleaning additives in the engine oil are therefore used for the removal of sludge and deposits.

With its advanced detergency additives, Amsoil protects the engine from sludge and performance-robbing deposit comparatively better than its competitor.

Oil Drainage

Oxidation and contamination are among the major reasons why acids are formed in engine oils. Carboxylic acids, formed due to oxidation, can cause corrosion of machinery parts if the acid has not been neutralized immediately.

This is because the oxidized oil becomes thicker and it becomes difficult to deliver it to the lubrication points.

Alkaline-based additives are added to engine oils to neutralize the acid, but this neutralizing effect is short term and the engine oil starts to become acidic again after some time.

And that’s why the necessity of oil drainage occurs.

As Amsoil has a higher TBN (Total Base Number) value, it will have a longer span before the need for oil drainage will again arise.

TBN simply helps to determine the remaining oil life by indicating the amount of alkaline-based additive left in the engine oil.

This means that the higher the TBN value, the longer will be the oil drainage interval.

Parameter	300V Factory Line Road  (10W – 40)	Amsoil 1 4T Performance (10W – 40)
Total Base Number	8.3 mg KOH/g	9 mg KOH/g

Anti-Wear Protection

With its high-performance synthetic Ester Technology, 300V contains special anti-corrosive agents which helps it in delivering superior protection against wear than its competitor.

This is because it provides excellent performance in reducing engine and transmission wear regardless of operating conditions.

Its oxidation-inhibitor additives further help in maintaining proper lubrication, even in extreme heat making it superior to its competitor in this category.

Summary

300V;

• has a higher viscosity index.
• is better in extreme weather temperatures.
• provides better anti-wear protection.
• meets MA and MB JASO standards.

Amsoil;

• has superior oil drainage interval.
• has better cleaning ability.
• meets the latest and more advanced API standard.
• offers a lower price.