two cycle fuel question: what would you do - Snowblower Forum : Snow Blower Forums
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post #1 of 74 Old 12-07-2019, 08:20 PM Thread Starter
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two cycle fuel question: what would you do

I have a question for the snow blower members here. A couple of days ago I filled my 2 gallon gas can with non ethanol fuel and added the required 2 cycle oil (synthetic) to get a 40:1 ratio. Some experts recommend the high quality 2 cycle oil be tc-w3 and NMMA certified, so I went and filled another 5 gallon container with the same 40:1 ratio and am ready for the upcoming storm that will hit the Northeast around Wednesday. My question is - what can I do with the first batch of fuel? Could I put some in my car next time I fill up? If I can, how much should I add to a full tank? Could that cause problems down the road with my car?
Thanks for any interest.

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post #2 of 74 Old 12-07-2019, 08:37 PM
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Just curious, what snowblower do u have


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post #3 of 74 Old 12-07-2019, 08:42 PM Thread Starter
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Originally Posted by e.fisher26 View Post
Just curious, what snowblower do u have


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1) Toro CCR - 2000
2) Toro CCR - 3650

Those are my 2 cycles I use for snow upto about a foot (powdery variety)

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Ariens - 924086 - ST1028
Craftsman - 88934 - 10HP 28"
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post #4 of 74 Old 12-07-2019, 08:48 PM
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I would never add anything but the proper gasoline to my car. Why risk a ~ $20k, $30k , whatever car with $5 of gas. If you are uncomfortable using the gas in your blower, take it in to a shop to be recycled. Most service stations, and many auto parts stores will take old gas or oil.

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post #5 of 74 Old 12-07-2019, 09:30 PM
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Use both in your snowblower, it will be fine, then use the TC-W3. The purpose of the TC-W3 is to reduce carbon buildup, not better lubrication so don't be scared of engine blow up. You can run the non TC-W3 in your lawn mower, motorcycle, not a car with a OBD1 computer.

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post #6 of 74 Old 12-07-2019, 11:41 PM
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Aldfam,

I can understand you're being cautious about this, but let's look at this logically.
First of all, all the advice you have received in this thread should work fine for you.

In addition, I'm suggesting that if you wanted to dispense with the two gallons of mix by adding it to your car's gas tank, you could likely do so without much concern.

Let's say you have an average size gas tank of 15 gallons....
Suppose you want to get rid of the gas over the next two fill ups. So you pour one gallon of this mix into your car's tank, right at the pump, when it's just about empty, and fill the tank the rest of the way at the pump.

What is the result?

Assuming you used the standard 3.2 oz of oil per gallon for a 40:1 mix that means you'd have approximately 3.2 oz mixed into 15 gallons of gas. That's a 600 to 1 ratio, or looking at it another way, way less than 1% (approx.0.16%) of the fuel is oil....synthetic oil at that.

I really find it hard to believe that that would cause any harm to your car. It's certainly not going to clog your injectors nor foul your O2 sensors or anything like that. It's just too small a quantity, if you did it that way.

Just consider this: If you've had the car for a few years, just imagine how much crap is floating around at the bottom of the tank that occasionally gets drawn into the fuel stream, and doesn't cause you any problems. It's unlikely that this minuscule percentage of syn oil is going to even be noticed by your engine.

BTW, I notice that you are using 40:1 instead of the 50:1 ratio recommended for those machines. I do the same thing with my R-tek based machines, except I only use dino oil now for all my 2 cycle equipment since I had a bad batch of syn oil that ruined two pieces of equipment before I knew what was going on. With dino oil you can "see" the viscosity. Much of the synthetic 2 cycle oil that I have seen, is practically the consistency of water, so you have no idea whether the formulation is correct. After that experience, I'm sure you can understand why I just can't trust it.

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post #7 of 74 Old 12-08-2019, 12:10 AM
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i would agree with sayitaintsnow. the amount of oil is so little compared to how big your gas tank is your vehicle likely wouldn't know any difference. i have done it many times with my vehicle to help lubricate a weak fuel pump. no obvious issue so far. i have also used 2 stroke gas in 4 stroke snowblowers or lawn mowers with no issues. got to use the gas up at the end of the season anyways if you didn't use it all in your machine.

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post #8 of 74 Old 12-08-2019, 01:03 AM
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As long as its diluted enough or the engine is used enough you shouldn't have any problems using it in your lawnmower or car. You might get a little bit of carbon build-up, but by the next tank full you will have burned off the little bit of carbon, plus it helps with top-end lubrication a bit and most cars won't notice it or cause any problems with the catalytic converter because it will burn off and out of it with a tank of regular gas.
Your new 2cycle oils have a very low "Ash" content now days and burn cleaner even though the oil does not actually burn before it gets out the exhaust muffler, and it lubricates better than the older oils and much better than regular motor oil pre/mix.

Last edited by ST1100A; 12-08-2019 at 03:09 AM.
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post #9 of 74 Old 12-08-2019, 03:44 AM
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old days we simply mixed in old non detergent type 30w oil, we ever had issues, today! oil and motor companies try to keep down carbon and keep CAILF's carb happy. if your uneasy with what the others have told you, which i as a retired auto master tech agree with, keep that worry can till spring and burn it in your 4 stroke lawn mower as all it will do is lube the top end a bit yet not hurt the machine it won't even smoke a tiny bit.
also take note on most bottles of 2 stroke oil you will see stabilizer included on that little bottle's label
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post #10 of 74 Old 12-08-2019, 05:27 AM
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Let's not forget that all auto engines are constantly burning minute quantities of oil thanks to the closed PVC system. So, oil in the fuel charge is nothing new.
However, as the ratio of oil-to-fuel increases the flame front will tend to destabilize and the potential for pre ignition. IDK at what percentage this becomes a concern. And, also, your personal driving habits directly influences things like pre ignition.
If your car is port injected you won't have to worry about carbonized intake valves, but, if it were me, I would do what 87powershiftx2 suggested: Put in into some other small engine such as the lawn mower.

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