Mobil 1 Racing™ 4T Motorcycle Oil

Mobil 1 Racing™ 4T 10W-40 is rated 4.8 out of 5 by 33.

Experience performance for four-cycle motorcycles

Mobil 1 Racing™ 4T 10W-40 motorcycle oil is designed primarily for on-road, high-performance, four-cycle sport bikes. It also may be used in other types of on- and off-road four-cycle motorcycles that specify the use of 10W-40 engine oil.

The unique, synthetic structure of the Mobil 1™ motorcycle oil formulations offers advantages beyond conventional motorcycle oils of similar viscosities.

This full synthetic motorcycle oil helps provide excellent performance in motorcycle engines that are either:

Designed with a common engine/transmission lubrication system, or
Designed so that the engine lubrication system is separate from the transmission system. (Follow the manufacturer's recommendation for the type of fluid to be used in the transmission.)

Please reference our Mobil 1™ Product Guide for a quick look at specifications including zinc and phosphorus, as well as manufacturer approvals for Mobil 1 motor oils.

More product information

Product data sheet [PDS] • Safety data sheet [SDS] • FAQs

Features and benefits

Optimized frictional properties

Consistent power due to reduced frictional losses
Overall optimized balance of engine performance and fuel economy

Exceptional wear protection

Helps 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

10W-40

Specifications and approvals

Mobil 1 Racing 4T 10W-40 motorcycle oil meets or exceeds the requirements of:

API SN
JASO MA2
JASO MA

Technical details

Grade	SAE 10W-40
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445	13.4
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445	85.9
Viscosity Index, ASTM D2270	159
Density @ 15 C, g/ml, ASTM D1298	0.849
Flash Point, Pensky-Martens Closed Cup, °C, ASTM D93	204
Pour Point, °C, ASTM D97	-48

View product data sheet for Mobil 1 Racing™ 4T 10W-40

Which oil for my vehicle?

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Rated 5 out of 5 by RoadAce from Best V-Twin Oil I've Ever Used! I have a 2004 Yamaha Road Star Midnight Silverado XV1700 V-Twin. I had used a couple of other brands (brand "C" and brand "RP"). They did the job, but I wasn't 100% happy with their performance. I use Mobil 1 Extended Life oil in my GMC truck, so I wanted to try Mobil 1 in the bike. I can honestly say that I'm now 100% happy with my oil's performance. On start-up, the engine is quieter. On the road, the engine runs cooler, quieter, and smoother. The transmission shifts smoother, too. Upon changing the oil, I even found the used Mobil 1 to be cleaner than the other brands I'd used when changing them. Overall, this is, in my opinion, the best oil you can use in a V-Twin engine.

Date published: 2016-01-30

Rated 5 out of 5 by adrenalinejunkie808 from Run this oil after break-in I changed oil to Mobil 1 Racing 4T 10w40 after the break-in period for my 2004 Honda CBR600RR. I was just out of the driveway when I noticed that the transmission changed dramatically. It shifted so much smoother! Like a blueprinted transmission! That was the first sign of improvement. I rode the bike about 10 miles, then did a high speed run. When I got back to the city, I had to stop at a red light. My engine was idling about 400 rpm higher. Something was wrong! What changed?... THE OIL! I turned the idle screw in and the idle settled down nicely. The oil decreased friction in the engine THAT MUCH! I WILL NEVER USE ANYTHING ELSE in my motorcycle!

Date published: 2019-11-14

Rated 5 out of 5 by Helion from Switched to Mobil 1 at first service! I have a 2013 H-D Ultra Classic with the 103 V-Twin and switched to Mobil 1at the first 1000 mile service. I immediately notice a reduction in engine heat in this air cooled motor and also used on the transmission and primary. Neutral has never been easier and the transmission oil looks like it was never used. Mobil 1 is cheap insurance and I like the convenience of using one oil in "all 3 holes". I keep a spare quart on hand though my bike never needs topped off. I'm a believer and my much cooler bike agrees.

Date published: 2015-03-17