I've been putting about 2oz (just shy of 60mL for you metric folks) of TCW3 rated Marine 2-stroke oil into my tank every time I fill up my car. A fill is usually between 10 and 11 gallons. So I figure 1oz per 5 gallons. 640:1 ratio, if my math is right (my math sucks). 640oz in 5 gallons...1oz of that  being oil... 640:1, right?  Anyway...read on.

My car, which has direct injection, and is VERY picky about gas, runs SO much better with it. There's far less high-pressure fuel pump noise (sounds like crickets because of the ethanol in the gas here) and the engine just sounds healthier in general. Aside from that, it idles smoother, seems to have better throttle response, is getting slightly better (about 3mpg) fuel economy, everything. All the things have improved. 

The first time I added it was about a month ago. After adding the oil I immediately saw an improvement. I mean within minutes of driving the car. There was a lot of valve train/injector noise at anything above 5000 RPM previously. It didn't sound BAD, it was just noisy and sounded a bit rough. After adding the oil, the amount of ticking/clicking/roaring, etc. was drastically reduced. At least by 50-60%. It is even more happy to rev now, and sounds very healthy, even at 7k RPM (redline is 8K).

At any rate, has anyone ever tried this in the GS? I don't know how it would interact with such a vastly different engine, but I can't see how it would hurt anything...?

It's important that it's TCW3 rated...at least for cars. TCW3 is designed to burn completely, is ashless, won't harm catalytic converters, etc.. It also has cleaning properties, which I can confirm.

We switched from regular two-cycle in the equipment at work to TCW3 about 6 years ago. Prior to switching, we were lucky to get half a season out of the spark plugs. After switching, we managed to get two full seasons out of plugs. Also, the little anti-flame screen in the mufflers would be all clogged up with ash and nasty soot. Since switching to the TCW3, we never had to clean those screens again.

I know "they" say you're not supposed to use marine oil in air-cooled engines like weedeaters and blowers and such...but we've been using it for a long time. In fact, when we bought our last weedeater, that's when we heard about it. The guy at the shop suggested we try it because it was so much cheaper. That was 6 years ago. That weedeater has had nothing but TCW3 in it ever since and was still running fine when I left the company earlier this year...6 years later. 6 years. Previously, we were lucky to get 3 years out of a weedeater (when you use something for 7hrs a day 5 days a week...it just wears out, that's all there is to it).

A bit of upper cylinder lubricant never hurts. TCW3 rated stuff nice cos it burns out ash less. But be brave, maybe forget all that environmentally friendly stuff and go for the tiniest splash of Castrol R in the fuel tank....mmmmmmm, hear the purr of the top end, and catch the smell on the breeze.....lovely jubbly.

Quote from: noworries on June 07, 2014, 05:41:26 AM
A bit of upper cylinder lubricant never hurts. TCW3 rated stuff nice cos it burns out ash less. But be brave, maybe forget all that environmentally friendly stuff and go for the tiniest splash of Castrol R in the fuel tank....mmmmmmm, hear the purr of the top end, and catch the smell on the breeze.....lovely jubbly.

ive got to agree with noworries here. It wont hurt in moderation. I used it in a 71 porsche I had as well as my48 plymouth p19 special deluxe helps with lubrication until the oil pump catches up

Someone told me you can add a bit of diesel, like a pint or 1.5 pints to a tank of gas to do ... well, something.

Cool.
Buddha.

Quote from: The Buddha on June 11, 2014, 04:54:07 AM
Someone told me you can add a bit of diesel, like a pint or 1.5 pints to a tank of gas to do ... well, something.

Cool.
Buddha.

you can but that's like kerosene or jet fuel ( same stuff pretty much) its thicker. 2 smoker oil is on the thin side it does work, youll smell it if you overdo it. but your cylinders will be happy

damn you cbr I LOLed my cat did that on my crown vic, and my moto I had at the time when I first got him. course he is crazy so idk.

So what's the conclusion. A bit of oil is good?

Quote from: The Buddha on June 11, 2014, 04:54:07 AM
a bit of diesel, like a pint or 1.5 pints to a tank of gas to do ... well, something.

a pint sounds like a lot...

Quote from: eee-zee rider on June 11, 2014, 12:30:06 PM
So what's the conclusion. A bit of oil is good?

Quote from: The Buddha on June 11, 2014, 04:54:07 AM
a bit of diesel, like a pint or 1.5 pints to a tank of gas to do ... well, something.

a pint sounds like a lot...

Sure does. However, realize that in 10 gallons of gas there's 80 pints. That's an 80:1 ratio. That's only a little over 1% of the fuel, 1.3% if my math is correct. If it was 15 gallons of fuel and 1 pint of diesel, that'd be even less.

I certainly don't see the diesel harming any of the fuel components. I'd have to see some evidence to back it up before I dumped diesel in my car, but in all fairness, it's not the first time I've heard of people doing it.

And yep, to answer your question, a bit of TCW3 oil in the gas can do some good.

id  a thiunner oil if it were me.  diesel or kerosene or jp1 ( same stuff with some refining lol) work but is a tad thicker. although in minimal amounts wont hurt. but be careful.  on quantity

Pint or pint and a half in my tank (which is a 97 F 150) ... so its like 30+ gal.
Cool.
Buddha.

tbh I had not considered this on newer vehicles. course ms piggy she coulkd have used it. a retired cop car driven hard and put up wet.

I've never thought about doing this, either. I generally Seafoam once per year (oil, intake, and gas). I might have to give this a shot.

Quote from: JAS6377 on June 11, 2014, 06:39:08 PM
I've never thought about doing this, either. I generally Seafoam once per year (oil, intake, and gas). I might have to give this a shot.

never tried seafoam. ive seen too many engines fragged over this. course I might have witnessed dumbassery in progress too idk.

So Seafoam won't harm the wet clutch? I've used it in the fuel and didn't notice a difference. I never used it in the oil because of the clutch question though.

Quote from: Rallyfan on June 11, 2014, 09:42:11 PM
So Seafoam won't harm the wet clutch? I've used it in the fuel and didn't notice a difference. I never used it in the oil because of the clutch question though.

Quote from: JAS6377 on June 11, 2014, 06:39:08 PM
I've never thought about doing this, either. I generally Seafoam once per year (oil, intake, and gas). I might have to give this a shot.

Adding the TCW3 helped more than Seafoam ever did for me. I think Seafoam might just be a bunch of chemicals, and it definitely doesn't have any lubrication properties that I know of.

Plus consider the cost... $8-10 for 1 pint of Seafoam, or $12 for a gallon of SuperTech (walmart) TCW3. Kind of a no-brainer...

Also, I too would be concerned about putting something that wasn't oil or an oil additive in the crank case. Think of it this way...it's probably not going to do anything, and if it does, it might break loose some caked-on stuff and cause the engine to leak. Not saying it WILL happen, just saying it's a possibility. And consider this...Seafoam is a cleaner, right? It must have some kind of de-greasing or de-sludging chemical in it (probably Acetone/Toluene/Xylene). I seriously doubt it's a good idea to have that stuff thinning out your oil.

You're absolutely right, Kijona. Seafoam really isn't a crankcase additive as most think of them. It's a petroleum based product with chemical detergents. So it's definitely not good to run it for an entire oil change.

So, to clear things up (my bad), I ran it for ONLY 80 miles, as per the directions on the can (they say no more than 100) before an oil change, and used only an ounce or two (however much the can said per 5 qts). I drive a 2005 Stratus with the 2.7L sludge machine, so I'm very particular about using full synthetic every 3000-4500 miles. The engine is notorious for having small oil passages and sludging. I used the Seafoam as a part of my 100k tune up (plugs, coolant, brake fluid, transmission fluid, etc.).

And Rallyfan, DON'T use Seafoam in your bike oil. It will mess up the wet clutch, much like detergent oils. This is specific to our 4-wheeled loves. It should be fine in the gas tank, though.

Edit: Yama, yes that was stupidity. It's very easy to hydrolock a motor with Seafoam if you don't do it right. You CANNOT let the car stall, and it's best sucked in only through a small vacuum line, as this helps to reduce the chance of hydrolock. I've done this on 3 cars (mine, my dad's, and my sister's) with no issues. You just have to know what you're doing.

Edit again: On another note, I just put 3 ounces of TCW3 in my gas tank (16 gallon). We'll see if it quiets my valve train.

Well, I realize the instructions say that about putting it in the crank case. It just would worry me to death...since any damage wouldn't necessarily be immediately apparent. Also, consider that modern cars use 0w-20 or 30 oil...which is SUPER thin as it is. Might not be a good idea to make it even thinner. Just my thought.

It's all good. I can see exactly where you're coming from. Judgement shall not be passed based upon additives lol.

On the topic of TCW3, my 115k mile 2.7 V6 is getting around 30 (+- 4) cruising on back roads. It still sucks gas when accelerating, but it does seem to be doing a bit better. And the valve train seems a bit quieter as well. Thanks, Kijona! There may be hope for my car yet lol.

Quote from: JAS6377 on June 14, 2014, 08:11:20 AM
It's all good. I can see exactly where you're coming from. Judgement shall not be passed based upon additives lol.

On the topic of TCW3, my 115k mile 2.7 V6 is getting around 30 (+- 4) cruising on back roads. It still sucks gas when accelerating, but it does seem to be doing a bit better. And the valve train seems a bit quieter as well. Thanks, Kijona! There may be hope for my car yet lol.

What's the ratio you're using for it? Nevermind. I see you said 3 for 16. That's just a touch under 1oz per 5 gallons. I would've added maybe 3.25 (or even 3.5)oz personally, for that initial treatment. Maybe run it down 5 gallons, add 5 gallons and then add another ounce, and then on top, add a quarter ounce or half ounce. That will compensate for the slight undermix previously, and also be good for the 5 gallons you just added. That way you'll be able to establish a base. From there, every time you fill up, you just need to add the correct dosage for the amount added to the tank - not the entire tank, since it would be impossible to run the tank completely dry.

Curious, what brand are you using?

After running about half a tank I say open it completely up - run it all the way to the red-line under load a few times. The TCW3 has some cleaning properties, and might help clean things up; the wide-open bit should help break stuff loose. Or it might blow the engine up! LOL