Mobil 1 Racing™ 4T 10W-40 Motorcycle Oil

Experience performance for four-cycle motorcycles

Mobil 1™ Racing 4T motor oil
Experience performance for four-cycle motorcycles

Mobil 1 Racing™ 4T 10W-40 advanced four-stroke motorcycle engine oil helps provide an outstanding level of performance in today’s high-performance motorcycles. It helps keep four-stroke engines running clean, providing protection even in extreme operating conditions.

Optimized balance of engine performance and fuel economy

Mobil 1 Racing 4T 10W-40 motorcycle oil combines high performance synthetic base stocks and a precisely balanced component system to help provide outstanding engine cleanliness, exceptional wear protection at high temperatures and highly effective protection from corrosion. It helps extend engine life and minimize deposit formation in high-performance motorcycle engines.

Designed for high-performance motorcycles

Use of Mobil 1 Racing 4T 10W-40 motorcycle oil helps maintain maximum power output due to the inherently strong performance and protection provided by the synthetic technology. The reduced frictional losses mean more consistent power. This specially engineered motorcycle engine oil helps deliver unsurpassed performance under severe operating conditions in all seasons, driving environments from mild to severe, and on the racetrack.

We stand behind our products

Please read our Mobil 1™ limited warranty. Always check your owner’s manual for the manufacturer’s recommended oil viscosity grade, API service classification and any builder approval. You can also refer to the Mobil 1™ Product Guide for a quick look at key manufacturer approvals and info on the zinc and phosphorus levels in Mobil 1 Racing 4T 10W-40 motorcycle oil.

If your vehicle is covered by a warranty, follow the vehicle’s oil-life sensor or the oil-change interval recommended in your owner’s manual. Proper maintenance practices, including frequently checking the oil level to ensure the appropriate amount of oil is present, are required to ensure effective performance.

Features and Benefits

Mobil 1 Racing 4T combines high performance synthetic basestocks and a precisely balanced component system to help provide excellent engine cleanliness, wear protection at high temperatures and protection from corrosion. Use of Mobil 1 Racing 4T helps to maintain optimum power output due to the inherently strong performance and protection provided by the synthetic technology. This specially engineered motorcycle engine oil helps to deliver optimized performance under some of the most severe conditions. Key features and potential benefits include:



Advantages and Potential Benefits

Optimized frictional properties

Consistent power due to reduced frictional losses. Overall optimized balance of engine performance

Thermal and oxidation stability

Excellent flow characteristics under extreme hot operating conditions helping to minimize deposit formation especially at the high operating temperatures found in air-cooled engines

Low-temperature properties

Excellent lubrication at cold operating conditions helping to enable easy starting, rapid wear protection and less drain on starter systems

Excellent detergent/dispersant capability

Help to provide engine cleanliness, smooth and reliable operation

Effective protection from rust and corrosion

Long life of critical valve train and bearing components



Mobil 1 Racing 4T is specifically recommended by ExxonMobil for lubrication of four-stroke motorcycle engines in high performance motorcycles


Specifications and Approvals

This product meets or exceeds the requirements of:





Properties and Specifications



SAE 10W-40

Kinematic Viscosity @ 100 C, mm2/s, ASTM D445


Kinematic Viscosity @ 40 C, mm2/s, ASTM D445


Viscosity Index, ASTM D2270


Density @ 15 C, g/ml, ASTM D1298


Flash Point, Pensky-Martens Closed Cup, °C, ASTM D93


Pour Point, °C, ASTM D97



Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @


Mobil 1 Racing™ 4T 10W‐40 is designed for sport bikes. Most of these bikes have multi-cylinder/multivalve engines and use a common sump, which means the engine oil lubricates the engine, transmission and wet clutch. So unlike Mobil 1 for cars, Mobil 1 Racing 4T 10W‐40 motor oil has no friction modifiers, which could lead to clutch slippage. The motorcycle oil also has more phosphorus/zinc for enhanced wear protection at high engine speeds and high loads. In addition, Mobil 1 Racing 4T 10W‐40 has a high performance dispersant/detergent technology for better high‐temperature performance and engine cleanliness. Mobil 1 Racing 4T 10W‐40 is also offered in a different viscosity grade than Mobil 1 for passenger cars.

In addition to the overall benefits of high‐temperature stability and low volatility/low oil consumption, Mobil 1 synthetic motorcycle oils also offer superior anti‐corrosion performance compared to conventional motor oil, which is important in many parts of the country where bikes may sit in garages for several months of the year. Compared to conventional oils, Mobil 1 motorcycle oils provide superior wear and high‐temperature protection, and promote engine cleanliness and lower oil consumption. Once you get beyond these general advantages, you have to consider individual motorcycle oils to understand the benefits of each.

It's a little hard to generalize about the difference between Mobil 1 passenger‐car motor oils and Mobil 1™ motorcycle oils. That's because not all viscosities of Mobil 1 passenger‐car oils have the same levels of zinc and phosphorus, and there are even greater differences between the two Mobil 1 motorcycle oils.

  • In general, Mobil 1 motorcycle oils have additive packages formulated for use in both motorcycle engine and transmission operation.
  • For passenger vehicles, fuel economy and emission system protection are higher priorities. These require low phosphorus systems and the use of friction modifiers.
  • Motorcycle oils do not require friction modifiers for fuel economy and for better clutch friction less/no friction modifier is optimum.
  • Motorcycle oils allow the use of higher levels of anti‐wear additives such as ZDDP (phosphorous).

Plus there are the overall benefits of Mobil 1 synthetic oil compared to those of conventional motor oils, whether they be for passenger cars or motorcycles:

  • Superior long‐term engine protection
  • Superior high‐temperature stability
  • Excellent low‐temperature starting
  • Outstanding engine performance
  • Low volatility/low oil consumption