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View Poll Results: Any difference?
Improved fuel economy 4 28.57%
Smoother operation / reduced noise 6 42.86%
Reduced oil consumption 0 0%
No difference 4 28.57%
Will continue treating fuel 5 35.71%
Will not continue treating fuel 4 28.57%
Multiple Choice Poll. Voters: 14. You may not vote on this poll

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Old 10-28-2013, 03:01 PM   #176
Angelus911
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I'm interested to see if this helps with oil consumption at all - I have mild consumption, about 1/2 - 3/4 qt per 5000 miles, but just did an oil change on Saturday, so this will be the first full oil change with TC-W3 as well
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Old 10-28-2013, 03:11 PM   #177
flyboy1100
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Scientific, closed testing is impossible in the real world. Temp/pressure/alititude/air density/wind/humidity/driver/traffic conditions/etc etc. Are always changing and for the most part uncontrollable. All we can do is take averages over multiple tanks and compare.

I suppose we could start taking logs if obd2 data, and I might on 2 of my cars, but there is a lot of work there sifting through it.


Recently all my averages have tanked and I suspect winter blend is back, historically all my vehicles take a 7-10% on winter blend which is where they are all sitting now, but using tcq3 seemed to have reduced the negative effects of ethanol on 3 of my vehicles, plus small engines.
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Old 10-28-2013, 03:54 PM   #178
eliminster
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Quote:
Originally Posted by Commander Keen View Post
It's actually 0.7%, but I haven't made any decision. I've only posted a tank of E0 and E10. Since both were treated with TC-W3 there's nothing to compare yet. This is something that affects entire tanks, and over a tank, many different things can affect mileage. Flyboy has posted plenty of data, including blind testing on his wife's car. If you want to join in and conduct your own experiment, feel free.
Sorry but have already been running different fuels for several years in my wrx and truthfully it comes down to if the gas station gets a more RON sided rating or MON sided rating cause the number octane you see at the pump is an average of the two or did you not look at the R+M/2 on their. Also as to the benefits of lubrication of tcw3 is well known in the other community I deal with since most of us premix on a ratio of 1oz to 1 gallon in our rotaries. I just got tired of people randomly posting my fuel changed by blank and it was this when it could have been temp differences, humidity, fuel quality from the pump, or a million others. And being at least as much as possible scientific in this it will alleviate some of these variables, just trying to help since there is some good info but also a lot of pages of assumptions.
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Old 10-28-2013, 04:50 PM   #179
Commander Keen
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I haven't claimed a numeric improvement. All I've posted are raw tank numbers.

(R+M)/2 means R and M are represented in equal parts. What do you mean by MON sided rating?

Assuming the fuel is at least 87 octane, BTU content is going to have a greater impact on fuel economy than octane.

Because there are all these factors adding noise to our results, collecting useful information is going to take months. I'm not going to list every traffic jam and thunderstorm I drive through.

You're welcome to try this on your car and post the data in any form you see fit.
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Old 10-28-2013, 06:58 PM   #180
jr0bb5
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So I started experimenting with TC-W3. I added 3 ounces to my tank when I filled up today.

Just a couple of quick questions. Are most of you following the reccomended 1oz per 5 gallons, or are you using more? Also, is it necessary to add the tc-w3 at every fill up to get the maximum benefits?
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Old 10-28-2013, 09:05 PM   #181
flyboy1100
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Quote:
Originally Posted by jr0bb5 View Post
So I started experimenting with TC-W3. I added 3 ounces to my tank when I filled up today.

Just a couple of quick questions. Are most of you following the reccomended 1oz per 5 gallons, or are you using more? Also, is it necessary to add the tc-w3 at every fill up to get the maximum benefits?
on my buick and our jetta, the negative effects are seen at the next fuel up (so essentially yes add at every fill)

I have been using 1oz per 4 gals because it is easier to just round up rather than say 2.4oz with a 12gal fill
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Old 11-05-2013, 04:37 PM   #182
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So I'm on my third tank with TC-W3 and I really haven't noticed any difference in mpg, or anything else for that matter. I'm wondering if my first tank using it also happened to be the first tank of winter blend gas that went into my car this season.

I'll keep using the tc-w3 until my quart is empty. Once its gone, I should be able to tell if it was making a difference or not.
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Old 11-05-2013, 06:45 PM   #183
flyboy1100
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The impreza seems to handle fuel variations better than everything wise I own that burns unleaded. My Buick gets driven a little more weekly than my impreza, abd there is a significant differ between using/not using tcw3. The jetta as well, I would say on average it is looking like about 7%. The impreza, maybe 1-2%. Need more testing, but now on winter gas, dropping temps, etc it will be hard to get consistent conditions for testing. I think due to chewing properties I will keep using it however.
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Old 11-21-2013, 11:14 AM   #184
Commander Keen
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10/11/2013 87E0 40.2 MPG
10/23/2013 87E10 39.9 MPG
11/21/2013 87E0 38.7 MPG

I excluded a tank before the last one because the driving varied too much. Cold weather is starting to have an effect.
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Old 11-21-2013, 01:59 PM   #185
flyboy1100
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Quote:
Originally Posted by Commander Keen View Post
10/11/2013 87E0 40.2 MPG
10/23/2013 87E10 39.9 MPG
11/21/2013 87E0 38.7 MPG

I excluded a tank before the last one because the driving varied too much. Cold weather is starting to have an effect.
Cold weather + winter blend is killing me. I'm down about 15%, even running 91e0 I can't get the same mpg as e10 summer gas, then I'm down about 10%. Going back to e10 next tank
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Old 11-21-2013, 09:16 PM   #186
jr0bb5
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Quote:
Originally Posted by flyboy1100 View Post

Cold weather + winter blend is killing me. I'm down about 15%, even running 91e0 I can't get the same mpg as e10 summer gas, then I'm down about 10%. Going back to e10 next tank
I hear ya man! My last two tanks have dropped about an average of 3 mpg per tank! Was hovering close to 29 mpg per tank, now all of a sudden I'm lucky to get 26.
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Old 11-21-2013, 10:11 PM   #187
flyboy1100
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Originally Posted by jr0bb5 View Post
I hear ya man! My last two tanks have dropped about an average of 3 mpg per tank! Was hovering close to 29 mpg per tank, now all of a sudden I'm lucky to get 26.
yup, only i was just over 30mpg, and my last fill was something like 23 all highway (with speeding and lots of wind)
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Old 11-27-2013, 11:01 AM   #188
Commander Keen
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10/11/2013 87E0 40.2 MPG
10/23/2013 87E10 39.9 MPG
11/21/2013 87E0 38.7 MPG
11/27/2013 87E0 36.6 MPG

Sliding further...
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Old 11-27-2013, 11:13 AM   #189
flyboy1100
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Quote:
Originally Posted by Commander Keen View Post
10/11/2013 87E0 40.2 MPG
10/23/2013 87E10 39.9 MPG
11/21/2013 87E0 38.7 MPG
11/27/2013 87E0 36.6 MPG

Sliding further...
i've given up on any further testing until spring, I'm still using TCw3, but other than fuelly not tracking it as this year looks like a much sharper drop off due to switching to mandatory e10 and winter blend at same time

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Old 11-27-2013, 12:37 PM   #190
Commander Keen
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Right. Between this weather and mystery fuel, the numbers are just too unstable.
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Old 11-28-2013, 05:11 PM   #191
jr0bb5
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Quote:
Originally Posted by flyboy1100 View Post

i've given up on any further testing until spring, I'm still using TCw3, but other than fuelly not tracking it as this year looks like a much sharper drop off due to switching to mandatory e10 and winter blend at same time
I'm also going to stop using the TC-W3 after my quart is gone. If I notice a big drop in MPGs after stopping, I may start using it again. It's too difficult to tell if it was making a difference or not with the colder weather and winter blend fuel.
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Old 11-28-2013, 05:17 PM   #192
flyboy1100
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Originally Posted by jr0bb5 View Post

I'm also going to stop using the TC-W3 after my quart is gone. If I notice a big drop in MPGs after stopping, I may start using it again. It's too difficult to tell if it was making a difference or not with the colder weather and winter blend fuel.
I'm going to keep using it because the extra lubrication is beneficial, just not worried about mpg differences right now, when everything stabilizes again in 6 months I will.

I know for a fact my Buick idles smoother and injectors are night and day quieter.
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Old 12-24-2013, 01:45 AM   #193
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So it has been 10,000 miles on this experiment. It was almost impossible to determine if gas milage has increased due to the season changing. I have been using the same gas station the majority of the time and only 87e10. Oddy, before starting the experiment 10,000 miles ago, oil consumption was less than one quart per 7,500 miles. Oil consumption is currently 1 quart every 5,000 miles. The only noticeable change has been the smoother running engine.
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Old 01-03-2014, 09:13 PM   #194
jr0bb5
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I'm officially done with my tcw3 experiment. I finished the quart at my last fill-up. Unfortunately, I have not noticed a lick of improvement in any area so I do not plan to continue using it.

I know some of you will argue that it still helps to lubricate the fuel system even if there's no noticeable difference, but to me, it's not worth the messy hassle of measuring out the perfect amount every fill-up. I'll probably just use a fuel system treatment like seafoam every once in a while.

Last edited by jr0bb5; 01-04-2014 at 01:43 PM.
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