TCWIII is formulated to be used in catalytic converter equipped outboard engines.
Two-cycle oil Formulations
- Thread starter MolaKule
- Start date
Interesting. I didn't even know they put cats on 2-stroke outboards.
They can push but anyone who knows better will mix up their fuel between 40 and 32:1.
I know in Diesels the Cat can be ruined by excessive idling, and short trip driving that doesn't allow the Cat to reach a high enough temperature to operate effectively.
I've heard they can be removed and washed out, but I don't know how effectively.
FWIW I've used Amsoil Saber since 1998 and my Lawn-Boy still had the hone marks on the cylinder when I tore it down to put seals and rod bearings in it. The rod bearings were worn, but I think it was because my son didn't like the noise from the mower and I would catch him lugging the engine through tall grass with the discharge chute clogged up LOL. Love my boys, though.
I'm late to this party, but...
Mechanics and engine builders are often the source of many myths in this industry. Most all mechanics courses don't include much about oil beyond how to change it. Engine builders, outside of professional builders with engineering education and backgrounds, can be be just as bad.
The landscapers are the same way. Most of them are doing what worked for their dad or granddad 30-40 years ago and refuse to entertain anything otherwise. There's one that works in my neighborhood who has to change the spark plug in his weedeater daily because he keeps fouling it ~15:1 oil mixture. "But the engine is better protected this way!" Those piston, chamber, and plug deposits tell a very different story, but you do you.
They don't require an engineering degree to diagnose this kind of stuff. Because they see it every day.
They only see the bad. Nobody brings their car in because it's running good. The fail rate of something could be extremely low, but if all you're seeing at the ones that fail, you'd think it's very high.
I really miss the simple 2 stroke motorcycles.Not long ago. RD400 in traffic:
I was amazed, and the bike sounded great.
There are still some dirt bike available with 2 strokes
I have 1985 Stihl FS81 I bought new that spent its first 3 yrs being worked hard in my lawn care business. This was before ethanol started being mixed in our gasoline. Back then it got nothing but Stihl brand 2cycle oil at 50:1.
When ethanol started being mixed into gasoline I started running 100LL avgas and Amsoil Sabre mixed at 75:1. Same with my Echo back pack blower and Stihl pole saw and 028S chain saw. They are all for personal homeowner use, not commercial.
For my 1990 EZ-GO 2 cycle golf cart w/Robin 244cc engine it gets 100LL avgas too and Amsoil Sabre mixed in at 128:1 ratio because its a low speed 2 cycle engine.
When ethanol started being mixed into gasoline I started running 100LL avgas and Amsoil Sabre mixed at 75:1. Same with my Echo back pack blower and Stihl pole saw and 028S chain saw. They are all for personal homeowner use, not commercial.
For my 1990 EZ-GO 2 cycle golf cart w/Robin 244cc engine it gets 100LL avgas too and Amsoil Sabre mixed in at 128:1 ratio because its a low speed 2 cycle engine.
I've been using non ethanol gas and the VP 2 stroke oil in all of my Stihl stuff for many years. I buy the Stihl oil when I buy a new piece of equipment, solely because they double the warranty period.
That said, the outboard oils would be far more economical to use than the VP stuff, has there been any studies done which examine the use of outboard 2 stroke oil in OPE?
That said, the outboard oils would be far more economical to use than the VP stuff, has there been any studies done which examine the use of outboard 2 stroke oil in OPE?
I am not aware of any significant studies comparing TCW-3 to EG-D oils. I do know that racers will use anything they believe gives them an advantage, and for some time, 125cc motocrossers were trying high concentrations of TCW-3, with acceptable results. But remember, they refresh a top end after some number of races. They don't want broken pistons causing a DNF.
Many people will give a "hard no" for use in air cooled engines. But it is good to remember that when sufficient oil is used, in a properly tuned OPE air cooled engine, oil related failure is not likely to result.
We have 2 KTMs and a Yamaha YZ250 2 stroke. Yamaha, Husky, Gas Gas, Beta, Sherco, and Reiju all make 2 strokes as well.
& just straight oil … with little (if ANY) additives1927 Maytag - 16:1 with 30W non detergent
Not a very long life engine, though
... It is 97 years old and still runs...What treasure.
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