Due to the nature of two-stroke marine engines, two-stroke oil lubricates the engine parts as it passes through the engine and is then burned along with the fuel. Two-stroke oil is either physically mixed with the fuel or, in the case of direct fuel injection, is combined with the fuel in the combustion chamber. This is in contrast to four-stroke engines which have oil sumps circulate the oil by pumping it throughout the engines.

The long-term objectives of the two-stroke engine industry have been to reduce emissions which contain burned and unburned oil that have passed through the engine, and to develop a quality of oil that reduces the mixture ratio to fuel while extending the life of the engine. That means significantly reduced emissions to satisfy EPA requirements, less warranty problems, and increased customer satisfaction due to engines lasting longer with less maintenance and overhauls.

TC-W3® lubricant, an NMMA-owned trademark, has evolved over the years through much testing and research, and has proven to be the level of quality needed to satisfy the above objectives. And, going a step further, now that two-stroke engines have moved towards higher cylinder temperatures and compressions, this type of lubricant also helps to meet the EPA emissions reductions.

TC-W3® has demonstrated the necessary lubrication performance quality needed for these more demanding cylinder/engine conditions.

The TC-W3® standard is a performance-based qualification program. The requirements include various bench tests for fluidity, miscibility, rust, compatibility, etc., as well as engine tests to evaluate the prevention of ring sticking and carbon buildup on pistons and other engine parts. The engine tests include one Johnson 40 hp, one Johnson 70 hp, and two consecutive Mercury 15 hp tests, all of which are run under severe conditions for 100 hours each. Two additional engine tests are also conducted to ensure a high level of lubricity performance. The testing process is comprehensive and expensive, but worth the outcome for consumers and manufacturers.

Once lubricants have demonstrated the necessary lubrication performance qualities needed for TC-W3® certification testing by NMMA-approved laboratories, NMMA licenses those two-stroke lubricants to be marketed to the public. TC-W3® oils are licensed around the world and are recommended for use by two-stroke engine manufacturers.

 In late 2015, a review of the requirements for TC-W3® marine oil certification was completed, and a number of changes were made to the program in 2016.  The results of this review are available in the Frequently Asked Questions document found below.


 

For more information regarding oil certification, contact:

Tom Marhevko
Senior Vice President, Engineering Standards
312.946.6213
 

2017 TC-W3 Registered Two-Stroke-Cycle Marine Oils

 

RL-00102R
AutoZone Multi-Use 2-Cycle Oil TC-W3
Amalie Oil Company
RL-00103T
SuperTech 2-Cycle TC-W3 Engine Oil
Amalie Oil Company
RL-00151F
Xcel Outboard & 2-Cycle Oil TC-W3
Amalie Oil Company
RL-00187N
INA Outboard Plus
INA MAZIVA Ltd.
RL-00197G
Synthe Nautic
Armorine
RL-00370R
Castrol Outboard Super TT Nautico Plus
Castrol Limited
RL-00400R
Gulf Pride 3000
Gulf Oil International
RL-00403J
7-Eleven Marine 2-Cycle Engine Oil
7-Eleven, Inc.
RL-00405J
Starbrite Super Premium TC-W3
Kinpak, Inc.
RL-00406J
Starbrite Premium TC-W3
Kinpak, Inc.
RL-00408J
ADNOC Outboard Engine Oil
ADNOC Distribution
RL-00409J
Federated Auto Parts Engine Oil Marine TC-W3
Federated Auto Parts
RL-00419J
Marine Outboard Two Stroke Oil
Penrite Oil Company
RL-00420J
Super Outboard 3
Chevron International Pte. Ltd.
RL-00425K
Bardahl Nepton TC-W3
Bardahl Asia Pacific Pte. Ltd.
RL-00427K
Mobil Outboard Plus
ExxonMobil Oil Corporation
RL-00428K
Mobil Yamaha 2T
ExxonMobil Oil Corporation
RL-00438K
Repsol Nautico Outboard & Jet Ski 2T
Repsol Lubricantes Y Especialidades S.A.
RL-00456L
Castrol Super Outboard
Castrol Limited
RL-00459L
Castrol Super Outboard Plus
Castrol Limited
RL-00462L
Spectrol 2-Cycle TC-W3 Motor Oil
Amalie Oil Company
RL-00468N
Mobil Outboard Plus
ExxonMobil Oil Corporation
RL-01371R
Phillips 66 Injex TC-W3 2-Cycle Motor Oil
Phillips 66 Company
RL-05012F
Amalie Pro Two-Cycle TC-W3
Amalie Oil Company
RL-10081G
Castrol Super Outboard Plus
Castrol Limited
RL-10140
Avia Outboard TC-W3
Thevenin & Ducrot Lubrifiants
RL-11180T
Nautic Plus 2T
Comercial Roshfrans S.A. de C.V.
RL-13121P
Sonic Dynamix Plus
Federated Co-Operatives Ltd.
RL-13126P
Tek-Star TecNautica 2-Cycle TC-W3
Port Consolidated, Inc.
RL-13128R
76 2T Unimix 2-Cycle Motor Oil
Phillips 66 Company
RL-13129R
Kendall 2T Marine 2-Cycle Motor Oil
Phillips 66 Company
RL-13135T
Phillips 66 Unimix TC-W3 2-Cycle Motor Oil
Phillips 66 Company
RL-26642T
Gulfpride 2-Cycle Engine Oil
Nu-Tier Brands / Gulf Lubricants
RL-27039K
Premium Blend 2-Cycle Outboard
Sierra International LLC
RL-29018F
RAVENOL Outboardoel 2T Teilsynth
Ravensberger Schmierstoffvertrieb GmbH
RL-29019G
RAVENOL WATERCRAFT Fullsynth 2-Takt
Ravensberger Schmierstoffvertrieb GmbH
RL-29060L
Ultra Super Stream OBMO
Trinidad & Tobago National Petroleum Marketing Co. Ltd.
RL-29067P
Castrol Outboard 2T
Castrol Limited
RL-29103P
Veedol Fuera de Borda TC-W3 / Veedol 2T Outboard Motor Oil
Veedol International Limited
RL-29152R
SPC Outboard 2T Super
Singapore Petroleum Company Limited
RL-29901H
RAVENOL WATERCRAFT Mineral 2-Takt
Ravensberger Schmierstoffvertrieb GmbH
RL-30010H
RAVENOL WATERCRAFT Teilsynth 2-Takt
Ravensberger Schmierstoffvertrieb GmbH
RL-30064B
Super 2T
Gonher de Mexico S.A. de C.V.
RL-30065B
Lubra 2T TC-W3
Lubricantes de America S.A. de C.V.
RL-30068L
Raloy Dos Tiempos TCW-3 (Outboard 2T)
Raloy Lubricantes, S.A. de C.V.
RL-30079R
Power Nautic TC-W3
Total Mexico, S.A. DE C.V.
RL-30097E
Bardahl Nautico Super BIA TC-W3
Bardahl de Mexico S.A. de C.V.
RL-31162U
Delta Outboard Motor Oil
Warren Distribution
RL-31247U
Bel-Ray JS-2 2-Stroke Marine Engine Oil
Calumet Packaging
RL-32034E
MG Jayaco 2-Cycle and Outboard TC-W3
Importadora La Plaza
RL-32257
UNIL OPAL Outboard TC-W3
UNIL OPAL
RL-33202P
Eni i-Sea Biolube 2T
Eni S.p.A.
RL-40462F
Irving 2 Cycle +
Irving Blending & Packaging
RL-40463F
Carquest 2 Cycle TC-W3 Oil
Carquest Canada
RL-51030
Q8 Outboard
Kuwait Petroleum Research & Technology BV
RL-56664P
Castrol Outboard 2T
Castrol Limited
RL-56669E
Valvoline Super Outboard 2T
Ellis Enterprises B.V.
RL-57170L
Titan Marine TC-W3
Fuchs Petrolub SE
RL-82008K
Gulf Green 3000
Gulf Oil International
RL-90000G
RAVENOL Outboardoel 2T Mineral
Ravensberger Schmierstoffvertrieb GmbH
RL-90001G
RAVENOL Outboardoel 2T Fullsynth
Ravensberger Schmierstoffvertrieb GmbH
RL-90041R
Biomarine Outboard Two Stroke Oil
Penrite Oil Company
RL-90044D
Outboard 1000 2T
YACCO
RL-92201
GALP Oceanus
Petrogal S.A.
RL-92334D
Havoline 2-Cycle Engine Oil TC-W3
Chevron Corporation
RL-92340L
Castrol Outboard 2T
Castrol Limited
RL-92402B
MP3 Sport
Rock Oil Company
RL-92805
Motorex / York Jet Speed 2T
Bucher AG Langenthal, Motorex-Schmiertechnik
RL-92940K
Direct Injection Synthetic Blend
Sierra International LLC
RL-93002J
Super Outboard 3
Chevron International Pte. Ltd.
RL-93015J
MAG 1 Marine 2-Cycle Engine Oil
Warren Distribution, Inc.
RL-93016J
Super Tech Outboard 2-Cycle Engine Oil
Walmart Stores, Inc.
RL-93018J
MFA Oil 2-Cycle Oil
MFA Oil Company
RL-93070R
UNO Lubricantes Impulse Outboard Motor Oil
UNO Lubricantes
RL-93101
Klotz TC-W3
Klotz Synthetic Lubricants
RL-93115R
Casey's Drive Professional Series 2-Cycle Outboard Engine Oil
Casey's Marketing Company
RL-93340
Motorex / York Ocean FS 2T Bio
Bucher AG Langenthal, Motorex-Schmiertechnik
RL-94102B
Aqua Max 2
Morris Lubricants
RL-95102C
Tohatsu Premium Outboard Oil
Tohatsu America Corporation
RL-96660T
PUMA 2T Outboard TC-W3
Puma Energy Singapore PTE, LTD
RL-96661T
Raloy Dos Tiempos TC-W3 (Outboard 2T)
Raloy Lubricantes, S.A. de C.V.
RL-99051T
Sunoco 2-Cycle Engine Oil
Calumet Packaging
RL-99293J
Peak 2-Cycle Engine Oil
Old World Industries LLC
RL-99301K
Castrol Biolube 2T
Castrol Limited
RL-99302K
Castrol Outboard Super TT Nautico Plus
Castrol Limited
RL-99309K
Yamalube 2M
Yamaha Motor Corporation, U.S.A.
RL-99340T
Gulf Pride 3000
Gulf Oil International
RL-99402K
Mobil Outboard Plus
ExxonMobil Oil Corporation
RL-99465T
Max Outboard
PTT Public Company Limited