Is TWC-3 Safe for Catalyic Converters??

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I see here folks are using TWC-3 as an upper cylinder lube... Sounds like a great idea. BUT!! Is TWC-3 Safe for Catalyic Converters??

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If used in sane amounts what are they recomending 1 part TWC3 per 200 parts fuel or something like that? In that situation it would be fine. You have to stop and thick though does you car already burn a lot of oil? If you own a GM product chances are good that you do not need to even think about TWC-3 because you are probably useing enough oil already to keep the valve train happy. Now on a wankle rotary engine or any engine that does not burn enough oil to be seen on the dipstick then this is a good idea. I played around with MMO and other fluids in my fuel a few years ago. I had a turbo charged off road vechile that loved to have some lubricant in the fuel. Not only was the engine drasticly quiter and I mean drasticly it also made more power and got better feul economy. It made a radical difference. Back then I was useing Neo and Amsoil 100 to 1 formulations but was not useing it at 100 to 1 I think I was around 200 to 1. NEO made the bigest difference I never got around to trying Redline and I never did a UOA of them either. Ester based lubricants added tot he fuel is about the only thing that will reduce wear on the old standyne pump set up!
 
Originally Posted By: ARCOgraphite
You might be better off using SA non-detergent motor oil.

I do not think so. TWC oil is designed to be mixed with fuel and burned. Also, by nature of the TWC-3 approval it is ashless, so no converter worries.
 
Yeah, just mix between 250 and 500:1 and you're good to go. People have been doing it for years over tens of thousands of miles without issue. As long as it's TC-W3 approved, I say go for it.
 
Originally Posted By: Silber Igel

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I see here folks are using TWC-3 as an upper cylinder lube... Sounds like a great idea. BUT!! Is TWC-3 Safe for Catalyic Converters??

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Perfectly safe for cats! It's ashless, burns cleanly and leaves no residue.Use @ 1oz per 5gals of gas. i have gotten a 2-3 mpg increase in both city and hwy mileage since i have been using!
Joe
 
I would keep the ratio to about 500:1 or even a little less. TCW-3 works well, but to much will foul plugs and rob power. You can get away with ODing MMO, TCW-3 is not as forgiving when you OD the engine on it. Both products work well as a top oil, and won't hurt the cat converter when used properly.
 
Why not use Lucas... It's a great oil that lubricates the top end, won't foul the plugs, quiets the injectors and doesn't contain anything but a bit of Calcium so there is nothing to hurt emission components.

I have 4 UOA's with it in/out the fuel and the two with it in show 0 ring wear metal and the the 2 with out show slightly elevated ring wear levels.
 
I've used Lucas years ago, and was just testing it again a few weeks back again. My fleet seems to run better with MMO in the gas. I've tested TCW-3 as well and keep going back to MMO.

I bought 4 bottles of RL Complete Fuel System Cleaner and will be testing that shortly.

If I had the inclination and money I'd try them with a UOA, but in all honesty it isn't worth it to me. I go by MPG's and the butt dyno :)
 
Originally Posted By: StevieC
Why not use Lucas... It's a great oil that lubricates the top end, won't foul the plugs, quiets the injectors and doesn't contain anything but a bit of Calcium so there is nothing to hurt emission components.

I have 4 UOA's with it in/out the fuel and the two with it in show 0 ring wear metal and the the 2 with out show slightly elevated ring wear levels.



TC-W3 doesn't contain any additives, it's just oil and solvents (some don't even have solvents). It's not going to hurt anything.
 
As for the Emission stuff I was referring to MMO not the TC-W3, the TC-W3 has a plug fouling concern if OD'ed on. The Lucas has none of these problem.
 
Originally Posted By: StevieC
Why not use Lucas... It's a great oil that lubricates the top end, won't foul the plugs, quiets the injectors and doesn't contain anything but a bit of Calcium so there is nothing to hurt emission components.


Ca is organometallic (metal/ash) and will cause CC fouling, ash deposit, preignition. Most folks experience with lucas is: its all junk; refinery byproducts with no place to go but to Joe Redneck. But if it works for U - go with it.
 
Originally Posted By: Onmo'Eegusee
Originally Posted By: ARCOgraphite
You might be better off using SA non-detergent motor oil.

I do not think so. TWC oil is designed to be mixed with fuel and burned. Also, by nature of the TWC-3 approval it is ashless, so no converter worries.
I'll agree with that. the FP on 2 cycle oils is hundreds of degrees less than PCMO. But does "ashless" mean <500 PPM just like in food labeling where "No hydrogenated oils" allow a trace percentage? I 'm a little interested, because my Toyota doesnt eat any oil so I might be inclined to do a weak mix top oil.
 
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I got news for you... Terry has analyzed it and your claims are false.

It contains light napthothic (sp?) oils, and a healthy dose of Calcium. That is it. No harmful solvents, no "junk, refinery byproducts, or harmful solvents"

Where is your information source from?
 
Uh, light oil fractions are refined out to lower FP and % off in finished MO base stock. I wasnt trying to be a "wise guy" a lot of off beat stuff works for me and people think I'm a nut. You are the guy that you make happy. I would only be concerned about the Ca detergent in the gasoline, otherwise I'm all for molecular weight diversity to keep a motor happy. I apologize. I'm under warranty, and I am afraid to "breath near the car" nevermind put ADDs in the oil or gas ;(
 
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