Motul Powerjet 4T 10W40 Engine Oil – 4L | Wet-Clutch Safe | Mineral | Motorcycle & Powersports | 105874

Motul Powerjet 4T 10W40 — mineral-based four-stroke engine oil in a 4-litre format. Formulated by Motul for motorcycle and powersports engines with wet-clutch transmissions. Suitable for most Honda, Yamaha, Kawasaki, Suzuki, KTM, Ducati, BMW Motorrad, and Can-Am/BRP powersports engines specifying a 10W40 4T oil. API SJ rated. Ships fast across Canada and the US.

Why 4T Oil — The Wet-Clutch Requirement

The “4T” classification is not a marketing term — it identifies a specific formulation requirement for the motorcycle and powersports application:

• Wet-clutch compatibility: Most motorcycle and ATV transmissions use a wet-clutch design — the clutch plates run submerged in engine oil rather than in a separate dry housing as in automotive transmissions. Wet clutches require oil with specific friction characteristics to engage cleanly without slipping. Modern automotive passenger car engine oils (API SN/SP) contain friction modifiers — additives that reduce internal engine friction and improve fuel economy. These same friction modifiers cause wet-clutch slip, reduced clutch engagement feel, and premature clutch wear in motorcycle applications. Motul Powerjet 4T is formulated without friction modifiers that compromise wet-clutch function.
• JASO MA / MA2 standard: The JASO (Japanese Automotive Standards Organisation) MA and MA2 standards define the friction performance requirements for 4-stroke motorcycle oil in wet-clutch applications. JASO MA2 is the current, more stringent standard. The Motul Powerjet 4T meets JASO MA specification — the correct standard for wet-clutch powersports applications.
• Shared sump: In most motorcycle and ATV engines, the engine oil lubricates the engine, transmission gears, and clutch from a shared sump. The oil must simultaneously provide engine protection (anti-wear, thermal stability), gear lubrication (extreme pressure additives), and correct wet-clutch friction. 4T oils are formulated to meet all three requirements from a single product.

10W40 Viscosity — Application Range

10W40 is the most widely specified 4-stroke motorcycle engine oil viscosity across Japanese and European manufacturers:

• 10W cold-start rating: The “10W” (W = winter) rating defines the oil’s pumpability at cold start. 10W flows readily at temperatures down to approximately −25°C / −13°F — providing adequate lubrication at engine start across most Canadian and US operating conditions including cold-weather riding seasons.
• SAE 40 operating viscosity: At 100°C operating temperature, the oil maintains SAE 40 kinematic viscosity — providing the oil film thickness required by most 4-stroke motorcycle engines at normal operating temperatures. SAE 40 is appropriate for most ambient temperature ranges encountered in North American riding conditions.
• Common OEM specification: 10W40 is the factory-specified viscosity for a wide range of Honda, Yamaha, Kawasaki, Suzuki, and KTM 4-stroke engines. Always confirm your specific engine’s oil viscosity specification in the owner’s manual before selecting oil grade.

Motul Powerjet 4T — Mineral Base Oil

The Powerjet 4T uses a mineral (conventional) base oil — refined petroleum-based lubricant rather than synthetic or semi-synthetic:

• Mineral vs synthetic: Mineral oils are produced by refining crude petroleum to remove impurities. Synthetic oils (Motul 7100 4T) are chemically engineered base stocks with more consistent molecular structure, better high-temperature viscosity retention, and longer drain intervals. The Powerjet 4T is Motul’s conventional mineral option — appropriate for older or lower-stressed engines, budget-conscious maintenance regimes, or high-frequency oil changes where the shorter service interval of mineral oil is deliberately managed.
• Motul oil hierarchy for 4T: Powerjet 4T (mineral) → 5100 4T (semi-synthetic ester) → 7100 4T (full synthetic ester). For high-performance sportbikes, track use, or extended drain intervals, the 5100 or 7100 4T are the appropriate upgrade path. The Powerjet 4T is the accessible entry into the Motul 4T range.
• 4L format: The 4-litre bottle covers one complete oil change on most 4-stroke motorcycle and ATV engines. Most 4-stroke motorcycle engines hold 2.5–4.0L including the filter. Engines with larger oil capacities (adventure touring bikes, large-displacement twins, some ATVs and side-by-sides) may require more than 4L for a complete change.

Mineral 4T engine oil — not synthetic. Wet-clutch compatible — no friction modifiers. 10W40. 4L. JASO MA. API SJ. Suitable for most 4-stroke motorcycle and powersports engines specifying 10W40 4T. Confirm engine specification in owner’s manual before use.

Specifications

• Brand: Motul
• Part Number: 105874
• Product: Powerjet 4T Engine Oil
• Base oil type: Mineral (conventional)
• Viscosity grade: 10W40
• Volume: 4 litres
• Application: 4-stroke motorcycle and powersports engines with wet-clutch transmissions
• API rating: SJ
• JASO rating: MA
• Friction modifier: None — wet-clutch safe
• Suitable engines: Honda, Yamaha, Kawasaki, Suzuki, KTM, Ducati, BMW Motorrad, Can-Am/BRP, and most 4-stroke powersports specifying 10W40 4T