Everything you ever wanted to know about 2-stroke oil but couldn't work the search function yourself

OCD Solutions

OCD Solutions

Original, Clean and Dependable Solutions
Location
Rentz, GA
Every had this thought and wanted more information that what the average keyboard cowboy can offer? Here is the low down on TC-W3 ratings and some insight as to what punishment the oils must endure to receive the certification.

http://www.nmma.org/certification/certification/oil/tc-w3.aspx

TC-W3 Two-Stroke Oil Certification Program
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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.

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Don't think the average TCW3 oil can stand up to your riding style? Check out the endurance test that EVERY TC-W3 must pass. Key points being 100:1 and 100 hours spent at WOT.

8.2 Endurance Run: The endurance portion of the test is started after the end-of break-in compression check and one hour shutdown. The engine is fueled with the test fuel and oil premixed at a ratio of 100:1 by volume. The test engine is run of ten individual, ten hour intervals (100 hours total) with one hour shutdowns and compression checks occurring at the end of each 10 hours. One test hour is comprised of 5 minutes at idle and 55 minutes at WOT with 2-5 second throttle position transition.
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masterblaster

masterblaster

X-H2
now thats a serious test routine, klotzr50 has no tc-w3 rating while their techniplate does have it.Ive forgotten what their tech said about benol % it has. wonder if r50 was submitted at all for the rating,they dont even list it as marine use,other than off shore high rpm racing use.
 
akok74

akok74

Location
MA
masterblaster said:
now thats a serious test routine, klotzr50 has no tc-w3 rating while their techniplate does have it.Ive forgotten what their tech said about benol % it has. wonder if r50 was submitted at all for the rating,they dont even list it as marine use,other than off shore high rpm racing use.
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Their site says 20% benol.
 
kevbo

kevbo

Location
dfw
Klotz kl200 is glycol, it will mix with gas but is mainly for alcohol. Their kl100 is 80% kl200 and 20% castor. All their other products are for gasoline only. Glycol based oil has no corrosion protection making it a very poor choice for watercraft.
 
Pro-pulsion

Pro-pulsion

Location
Ontario, Canada
Glycol? Why would they use glycol in oil? Unless it is a different variant from antifreeze which is ethylene or propylene glycol. One thing I have learned from the 4-stroke ATV market is that if you get coolant (which is glycol based) thoroughly mixed nto your engine oil it will actually seal the bearings from getting oil and burn up your engine. I have also noticed that coolant is one of the best metal cutting fluids you can ask for, it works well for drilling tough materials and will shave off material inside an engine with ease once soaked into the metal. Me thinks you are bang on saying that is a poor choice for watercraft kevbo...or any engine lol.
 
kevbo

kevbo

Location
dfw
It is the same as PAG oil used in air conditioning systems. It mixes with alcolol and nitro better than castor and burns with little residue. Klotz should be more clear about the best applications for their products. They probably sell a lot of kl200 to mistaken consumers.
 
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