Mobil 1 Racing™ 4T Motorcycle Oil

Rated 4.7 out of 5 by 18 reviewers.

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] • Limited warranty • FAQs

Features and benefits

Superb shear stability can help resist viscosity shear down in high-performance engines and transmissions
Exceptional thermal stability can help resist oxidation and high-temperature degradation
Outstanding protection against wear of engine and transmission components
Enhanced lubrication can help maintain maximum power and acceleration over the life of the engine
Optimized wet-clutch performance
Excellent low-temperature flow characteristics can help minimize engine wear during startup

10W-40

Specifications and approvals

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

API SM
API SL
API SJ
JASO MA 2011
JASO MA2 2011

According to ExxonMobil, Mobil 1 Racing™ 4T 10W-40 is of the following quality level:

API SH

Technical details

Engine/Application Type	4-Cycle
SAE Grade	10W-40
Service Classification	API, SH, JASO MA, MA2
Density, g/ml @ 15.6°C (ASTM D4052)	0.86
Flash Point, °C (ASTM D93),	212
Pour Point,°C (ASTM D97)	-45
Kinematic Viscosity, cSt @ 40°C (ASTM D445)	82.0
Kinematic Viscosity, cSt @ 100°C (ASTM D445)	13.1
Viscosity Index	161
Cold Cranking, cP (ASTM D5293)	4,640 @ -25°C
Pumping, cP (ASTM D4684)	11,700 @ -30°C

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

Which oil for my vehicle?

Show reviews

Rated 5 out of 5 by luv2fix Used in a Peerless VST Hydrostat Lawn tractor This is an older Murray Tractor with a VST unit that I rebuilt because of internal loose hardware. These units run very hot and there is a consensus of using 20W50 vs their expensive hydrostat mystery oil in the pump. Many have had success with this fluid. Unit seems very smooth and noiseless after 10 hours of use. While flat terrain performance is maybe a bit better than the old fill, Performance on steeper hills is excellent, the old stuff seemed to struggle even when brand new. Considering the old stuff was 15 years old, This oil will hopefully last the life of the unit. June 4, 2016

Rated 2 out of 5 by OlderMX JASO Rating 20w50 doesn't have the recommended JASO MA or MA2 by Rekluse clutches and many MX bikes with wet clutches. May 30, 2016

Rated 5 out of 5 by MuddyYamBear Boosts Power, Restores Torque, Smoother Shifting I own a 2000 Yamaha Big Bear 400 4x4. I used to use Castrol GTX but found out from my mechanic that an additive in it will hurt the clutch. I am a fan of Mobil 1 oil in my car, so I searched for oil for my atv. As soon as I put it in, I got better take offs, smoother shifts, and a cleaner, smoother idle. I 100% recommend this oil. March 27, 2016

Rated 5 out of 5 by Wingnut95 Good Quality, Price is right. I have been using this in my 2004 Honda Goldwing GL1800 for several years. Shifting is smooth and quiet after changing. The oil holds up well. It might go longer, but I change every 5000 miles. February 16, 2016

Rated 5 out of 5 by RoadAce 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. January 30, 2016

Rated 5 out of 5 by drew5250 Great oil worth the extra cost I switched from Valvoline synthetic to Mobile 1 in my Triumph Speed Triple. There is a noticeable difference in clutch smoothness and engine performance. My bike runs much smoother and quieter than before, this is especially true during the initial warm-up procedure. Mobile 1 stays much cleaner than any other oil I have used in the bike. I've found that after a year the oil is still good, though I replace my oil once a year and use a K&N oil filter (I put about 3,000 miles a year on my Triumph). I'm going to stick with this oil, my bike loves it! September 12, 2015

Rated 5 out of 5 by Moonmanvt I switched! I used to use a traditional 20W50 oil in my 2007 FLTR. I tried Mobil 1 V-Twin after reading about it in one of the motorcycle magazines I subscribe to. My engine now runs cooler and quieter, plus it seems to run smoother. Now I only have to change the oil once or twice a year. Just wish it came in a gallon size. October 17, 2015

Rated 5 out of 5 by spooln30 Great Oil for ATVs!! I used to run Shell Rotella in my Arctic Cat 500 and it worked but I decided to try Mobil 4T after a friend tried it and said he liked it better the the Shell. Well after on weekend of riding I was pleasantly surprised with this 4T oil. What I noticed was better wet clutch performance, less noise from the transmission gears and also the oil stays cleaner longer then the Shell Rotella. I will continue to use this oil for sure. June 7, 2015