Castrol POWER1 4T 10W-30

CastrolCastrol POWER1 linemotorcycles10W-30

10W-30 oil for four-stroke motorcycles with a wet clutch: JASO MA2, API SL, suitable for engines with a catalytic converter.

Classification
Product line Castrol POWER1 2 oils
SAE viscosity 10W-30What SAE means
Intended use motorcycles
API class What API means
JASO class
Typical properties
Viscosity at 40 °C 73 mm²/s
Viscosity at 100 °C 11 mm²/s
Viscosity index 144
Pour point -37 °C
Flash point 210 °C
Density 863 kg/m³

Description

Castrol POWER1 4T 10W-30 is an engine oil from the POWER1 line for four-stroke motorcycles whose clutch runs in the engine oil. The maker describes it as a synthetic-technology product but does not name the base oil group.

The oil is rated JASO MA2, meaning its friction properties are matched to a wet clutch so that it does not slip, and API SL. No official motorcycle-maker approvals are listed for it.

Typical figures: 11 mm²/s at 100 °C, viscosity index 144, pour point -37 °C, flash point 210 °C, density 863 kg/m³.

According to the data sheet, the oil is suitable for engines with a catalytic converter.

Application

Four-stroke motorcycles with a wet clutch where the manufacturer specifies a 10W-30 oil to JASO MA2.

Worth knowing

This oil’s API class is best checked against what the can itself says. Castrol’s Ukrainian product card gives API SL and JASO MA2 for POWER1 4T 10W-30, with the wording “meets or exceeds industry standards”, while Castrol’s technical data sheet names API SP in its list of specifications. The catalogue page shows SL, as the card does. SM and SN lie between these two categories, so for a motorcycle whose manual calls for API SN or higher, what counts is the category printed on the can you actually buy. The note on the API SL class briefly explains which engines API now considers SL suitable for.

The line’s other oil in the catalogue, POWER1 Scooter 4T 5W-40, is no substitute for this one. It has the JASO MB class with reduced friction, designed for scooters with a dry clutch, and MB oil should not go into an engine designed for MA, because the clutch may slip. Its SAE grade and API category differ too.

Data current as of Check the label and the current product data sheet before you buy.

Sources

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