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#3247477 - 01/13/14 08:35 PM Upper cylinder lube vs. oil additives
dino33 Offline


Registered: 02/11/13
Posts: 107
Loc: British Columbia
So, we like additives to extend our engine life, keep them running at top performance, and maybe even get some extra mileage with our fuel. the question is do we use additives and ignore an upper cylinder? Is a ucl as effective as an additive? And is there any evidence or proof that an upper cylinder lubricant is effective at lessening wear and keeping your engine in top shape? For what it's worth I'm using ceretec/Mos2 with good oil. As well, I've been using Lucas ucl for the last year. I want to get at least a half a million kms out of the Prius. So far so good.... Thanks in advance...
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#3247491 - 01/13/14 08:45 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
gregk24 Offline


Registered: 04/13/13
Posts: 3832
Loc: FL, USA
I believe additives are unnecessary with a quality oil.
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#3247493 - 01/13/14 08:47 PM Re: Upper cylinder lube vs. oil additives [Re: gregk24]
dino33 Offline


Registered: 02/11/13
Posts: 107
Loc: British Columbia
A lot of people have that opinion. What do you think about a good UCL?
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#3247496 - 01/13/14 08:49 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
AandPDan Offline


Registered: 02/01/11
Posts: 796
Loc: MA
Additives are a waste of money.

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#3247505 - 01/13/14 08:58 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
EricG Offline


Registered: 03/03/09
Posts: 95
Loc: SW Louisiana
Ask yourself what an upper cylinder lube does that a lower cylinder lube (AKA, motor oil) does not do!

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#3247507 - 01/13/14 09:00 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
Ducked Offline


Registered: 10/25/12
Posts: 329
Loc: Taiwan
It DOES NOT MATTER what we think about UCL's.

To answer your question usefully, you'd need the statistics for long term wear-related engine failure modes for the Toyota Prius.

If upper-cylinder wear was a (or the) predominant cause of failure (requiring an engine rebuild) then UCL would be worth further consideration.

I'd bet money that no one is going to post that information on here. I suspect even Toyota may not have that information, but they'd be the people to ask.

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#3247532 - 01/13/14 09:13 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
Donald Offline


Registered: 03/21/04
Posts: 15418
Loc: Upstate NY
Originally Posted By: dino33
So, we like additives to extend our engine life, keep them running at top performance, and maybe even get some extra mileage with our fuel. the question is do we use additives and ignore an upper cylinder? Is a ucl as effective as an additive? And is there any evidence or proof that an upper cylinder lubricant is effective at lessening wear and keeping your engine in top shape? For what it's worth I'm using ceretec/Mos2 with good oil. As well, I've been using Lucas ucl for the last year. I want to get at least a half a million kms out of the Prius. So far so good.... Thanks in advance...


Who is we??

Use high quality synthetic oil and forget the additives.
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#3247544 - 01/13/14 09:21 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
NMBurb02 Offline


Registered: 09/12/12
Posts: 1733
Loc: Crowntown, CA
Many board members run TC-W3 2-stroke oil and/or MMO in their gas as an UCL. I experimented a bit myself with MMO, TC-W3, and a MMO/TC-W3 mix in the gas and saw no real improvements in mileage or motor oil consumption (some say running an UCL results in a better ring seal and therefore less motor oil pushing past the rings into the combustion chamber). I gave up completely with the GP and am finishing off my current supply of TC-W3, but may pick up again with some MMO dosing in both just to see what happens.

I don't know that anyone has made claims of better engine longevity from use of an UCL. Clams have mostly been related to fuel efficiency, smooth engine running, and/or improved butt dyno results.
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#3247549 - 01/13/14 09:22 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
Clevy Offline


Registered: 11/11/10
Posts: 9233
Loc: Saskatoon canada
As far as upper cylinder lubes go I cannot say for sure whether they affect wear in any measurable way however I still use tc-w3 in my fuel just in case. It costs pennies to treat a tankful and hasn't hurt yet. I've never had a fouled plug or anything.
Tc-w3 has detergents in it and because it's an oil it may help fuel pumps and rubber seals exposed to the drying effects of ethanol.
Either way its cheap and in my mind its not hurting anything.
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#3247574 - 01/13/14 09:38 PM Re: Upper cylinder lube vs. oil additives [Re: Clevy]
turtlevette Online   shocked


Registered: 12/24/13
Posts: 1764
Loc: Massachusetts
Originally Posted By: Clevy
As far as upper cylinder lubes go I cannot say for sure whether they affect wear in any measurable way however I still use tc-w3 in my fuel just in case. It costs pennies to treat a tankful and hasn't hurt yet. I've never had a fouled plug or anything.
Tc-w3 has detergents in it and because it's an oil it may help fuel pumps and rubber seals exposed to the drying effects of ethanol.
Either way its cheap and in my mind its not hurting anything.


I assume you're running much less than a 50:1 ratio as used in outboard motors. Does it produce that stinky exhaust that outboards have? What is the threshold?
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#3247584 - 01/13/14 09:47 PM Re: Upper cylinder lube vs. oil additives [Re: Clevy]
Finz Offline


Registered: 06/06/13
Posts: 558
Loc: Northern NJ
Originally Posted By: Clevy
As far as upper cylinder lubes go I cannot say for sure whether they affect wear in any measurable way however I still use tc-w3 in my fuel just in case. It costs pennies to treat a tankful and hasn't hurt yet. I've never had a fouled plug or anything.
Tc-w3 has detergents in it and because it's an oil it may help fuel pumps and rubber seals exposed to the drying effects of ethanol.
Either way its cheap and in my mind its not hurting anything.


+1
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#3247588 - 01/13/14 09:51 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
Cujet Offline


Registered: 02/15/03
Posts: 4933
Loc: Jupiter, Florida
I hate to admit it, but I tried MMO in the gas in my 2003 Jaguar X-Type 2.5L V6. I was experiencing a rough idle and started thinking about poor valve sealing, sticky rings, balky injectors and so on. Considering that MMO has been known to help in such matters, I tried it. Success!

I added nearly a quart of the stuff to a 15 gallon tank. The engine was nearly instantly smooth. And, it clearly remains so many tanks later.

What happened? I really don't know. And, while I prefer scientific methodology and reasoning over "old wives tales", I can only speculate on the reasons why it worked. I will refrain from doing so.
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#3247589 - 01/13/14 09:51 PM Re: Upper cylinder lube vs. oil additives [Re: turtlevette]
Finz Offline


Registered: 06/06/13
Posts: 558
Loc: Northern NJ
Originally Posted By: turtlevette


I assume you're running much less than a 50:1 ratio as used in outboard motors. Does it produce that stinky exhaust that outboards have? What is the threshold?



Personally, I'm running 1 oz to every 5 gals of petrol... 600:1
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#3247621 - 01/13/14 10:29 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
MinamiKotaro Online   content


Registered: 08/01/12
Posts: 859
Loc: TN
I put MMO in my Bug's gas because it makes the fuel pump quieter. The pump is INCREDIBLY loud otherwise. Any cleaning or other benefits are simply a plus.

I'll be trying TCW3 shortly. Its a lot thicker so I imagine it would do more to quieten the pump. The Pennzoil kind is cheaper than MMO so if it does the job I'll switch.

I've been putting Lucas UCL in my Polaris, mostly to use it up as it did absolutely nothing for quieting the fuel pump in the Bug. I can't really tell any difference using vs. not using it.

I found a box of mothballs and I've been putting them in the brown van, one per fill-up, to see if the old-timers may have been onto something. The thing seems to be smoother but no improvement in MPG, or anything. Could be my imagination or the naphtha may have cleaned out a little something in the carburetor.
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#3247623 - 01/13/14 10:31 PM Re: Upper cylinder lube vs. oil additives [Re: dino33]
mongo161 Offline


Registered: 07/11/10
Posts: 3456
Loc: Coney Island, NY
A blended mix of 1 oz, per gallon of Gas, for TC-W3 and 3 ounces of Chevron Techron at every fill up or every other fill up. It's very important to use this mix when the Winter Gas is sold at the pump. This mix will lube everything between the gas tank and the upper cylinder.

Don't forget to use ONLY TC-W3 since this engine oil is "ash-less" and burns clean. The 3 ounces of Chevron Techron Fuel System cleaner at every fill up is just a maintenance dose and combined with the TC-W3 it fills up my empty 6 ounce bottles that are used for dosing at fill up time.

I've been using this combo for 3+ years now and I've never had a problem.
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