Castrol Power1 10W-40 Synthetic 4T Motorcycle Oil Review

 Roll over image to zoom in      Castrol 06112 Power1 10W-40 Synthetic 4T Motorcycle Oil - 1 Quart Bottle, (Pack of 6)
  • Editor Rating

  • Rated 5 stars
  • Spectacular

Review Summary:

The Castrol Power1 10W-40 Synthetic 4T Motorcycle Oil is absolutely the cream-of-the-crop for most modern motorcycles. Its immense features and traits such as the ability to boost smooth and quiet gear switching, prolong life of the engine and avoiding clutch slip, among others are truly worth every penny.


Motor oil is like a gift from above where it prolongs the life of motorcycles especially during heavy use. While other motor oils do more harm than good, as they pose as catalysts for early corrosion of engines, such as crude-based ones. But with the introduction of the synthetic varieties like the Castrol Power1 Synthetic 4T Motorcycle Oil, things had started to change.

Synthetic base oils have been around for decades, but not all have bring clean and clear solution to the perennial problem of bad combustion. The Castrol Power1 is a new generation type of oil primarily designed and blended for motorcycles.

This type of oil is commonly used for 4-cycle (or 4-stroke) engines and only a small quantity is needed per liter of fuel. Discover more of the properties of the Power1 as we discuss here some to widen your knowledge about the oil. This would entail smart decision when the need arises.

Product Features

 Roll over image to zoom in Castrol 06112 Power1 10W-40 Synthetic 4T Motorcycle Oil - 1 Quart Bottle, (Pack of 6)

Roll over image to zoom in Castrol 06112 Power1 10W-40 Synthetic 4T Motorcycle Oil – 1 Quart Bottle, (Pack of 6)

1. API SL and JASO MA-2 Approved

The Castrol Power1 meets the standards set by API SL which is an engine test on current models engine design that meets the contemporary emissions standard. The JASO MA-2 standard is a Japanese system of specifications introduced in 2006 for motorcycle with modern engines. This approval simply means that the oil is suited for use in motorcycle with catalytic converters on its exhaust system. JASO stands for Japanese Automotive Standards Organization.

2. Full Synthetic

Using the latest state-of-the-art technology in formulating and blending full synthetic base engine oils, this product is 100% non-crude. Power1engine lubricant is certified full synthetic as it is a non-petroleum synthesized compounds. This enables the oil to have clear emissions and the cleaning capacity inside the engines’ surfaces which crude-based motor oils simply cannot do effectively.

3. Shear Stability

Being subjected to mechanical shear or stress, this engine oil has the capability to resist change in viscosity or the capacity to thin-out, but does not evaporate, that reduces viscosity. This characteristic makes the oil fluid at any given time, whether it is subjected to extreme cold or super-hot temperatures.

4. Maintains Viscosity in Extreme Conditions

Having shear stability, the ability of this oil to maintain its viscosity even in extremely hot and cold temperatures is rare among crude-based engine oils. The Castrol Power1 has also the capacity to decrease its viscosity when subjected to shear stress and then returns to its original state (same viscosity) when shear stress is diminished.

5. For 4-cycle Engine

This oil is designed for use for all 4-stroke motorcycles where its makers approved the use of multi-grades. These include those engaged in different types of motorsports and other high-performance use. Motorcycles fitted with turbochargers and the latest technology motorcycles are the primary target of this innovative synthetic oil.

This synthetic base oil is also suited for motorcycles that have the clutch as an essential part of the gearbox. It is basically befitting where high clutch spilt is frequently happening or where stable friction traits are required under extensive load application.

6. Trizone Technology

Using a cutting-edge technique such as the Trizone Technology, Castrol had formulated this full synthetic oil to protect the bike’s 3 of its most critical zones: the engine, gearbox and clutch. The engine is protected from early corrosion by minimizing the formation of carbon deposits, lacquer, high-temperature varnish and sludge.

It also enhances clutch slip control and clutch drag brought about by low temperature making gear switching (gearbox) smooth and easy.

7. Exceeds Requirements of Various Specifications

This product exceeds the requirements set by different standards such as those of API SJ, SH, SG, SF and SE which is why the oil is very suited for use in most Japanese and European motorbikes.

Pros & Cons


  • Decreases coefficient of friction: As we have stated above, this oil has the capability to become thinner when subjected to excessive mechanical forces such as shear and stress. But this decrease in the coefficient of friction is only temporary; the manufacturer has proven that the chemical and physical properties of the oil do not change.
  • Amazon Ranking: For Automotive Fluids and Oils category, the Castrol Power1-4T Motorcycle Oil has been ranked by Amazon as the 17th most popular brands in the said category as of this writing. The product scores 4.9 Stars (5 being the highest) and garnered an impressive 98% satisfaction rating.
  • Could be used in wet clutches: Some Amazon customers who purchased and tested this product testified that this synthetic base oil is safe for wet clutches. This oil also intensifies clutch pack life even under extreme conditions such as those in Superbikes and Drag Racing.
  • Enhances swift gear transmission: The Trizone Technology really did some trick on this oil as it boosts smooth and swift gear changing even in prolong use in long distance travel without stopping.
  • Comes in pack of 6: When you order, the package contains 6 bottles with 1Quart of oil each.
  • Superior acceleration: Using this oil will enhance the sensitivity of the throttle. The acceleration of the engine could be realized at the touch of the throttle. The smoothness may be a little bit of inconvenience for first time user, but as the time progresses, so are the hands.


  • Inevitable oil leak with improper gaskets: Like all engine oils, if your bike’s engine gaskets are not properly placed, uneven, loose or oversized/undersized, the possibility of leakage is high. So, better check those gaskets religiously.
  • Frequency of oil change: For old motorbikes, it is advised that frequency of changing the oil should be done much frequent compared to new units. This will enable a thorough cleaning of leftover particulates from the old oil.


This oil really does the works. The Castrol Power1 10W-40 Synthetic 4T Motorcycle Oil is certified and approved for use in majority of the world’s motorbikes by various manufacturers. This only proves that this synthetic base motorcycle oil is better than petroleum-based engine oils.