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

Experience performance for four-cycle motorcycles

Mobil 1 Racing™ 4T 10W-40

Mobil 1 Racing™ 4T 10W-40 is an advanced four-stroke motorcycle engine oil. This product helps to provide an outstanding level of performance in today's high performance motorcycles. It will help keep 4-stroke engines running clean protecting even in extreme operating conditions.

Please 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.

Features and Benefits

Mobil 1 Racing 4T combines high performance synthetic basestocks and a precisely balanced component system to help provide outstanding engine cleanliness, excellent wear protection at high temperatures and highly effective protection from corrosion. Use of Mobil 1 Racing 4T helps to maintain maximum power output due to the inherently strong performance and protection provided by the synthetic technology. This specially engineered motorcycle engine oil helps to deliver unsurpassed performance under severe operating conditions in All Seasons, driving environments, from mild to severe, and on the racetrack. Key features and potential benefits include:



Advantages and Potential Benefits

Optimised frictional properties

Consistent power due to reduced frictional losses

Overall optimized balance of engine performance and fuel economy

Exceptional wear protection

Helps to extend engine life

Outstanding thermal and oxidation stability

Fluid film protection at all operating temperatures minimizing deposit formation especially at the high operating temperatures found in air-cooled engines

Outstanding low-temperature properties

Effective lubrication at low ambient temperatures helping to enable easy starting, rapid wear protection and less drain on starter systems

Excellent detergent/dispersant capability

Outstanding 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 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