Additives

[Yar Is Word]

It took me three tanks to notice the difference but I kept on. It's been at least a year and a half now and I know the ECHO was consistently getting about 2 mpg more. I am not sure about the Yaris because I started using it right away.

[NJBob]

Originally Posted by Yar Is Word

It took me three tanks to notice the difference but I kept on. It's been at least a year and a half now and I know the ECHO was consistently getting about 2 mpg more. I am not sure about the Yaris because I started using it right away.

Even two would be ok just to say I've been hitting 40 mpg regularly.

[Klink10]

Did the same yesterday.....nothing to lose so what the hell.

[Yar Is Word]

Product info sheet here:
http://www.racerpartswholesale.com/d...C-10020-sm.pdf

[NJBob]

Some on board computers will accomdate/adjust for a different octane...perhaps our Yarii does not. My '98 Neon R/T required 89 octane and DID get better mileage with higher octane. It was a DOHC high performance engine however.

[marcus]

sounds like a spam... is he advertising...

[NJBob]

Well, 4 tanks gone now and I see no change. However my tires have deflated down to 30psi, I was running them at 40. Let's see what I get at the end of this tankful.

[Yar Is Word]

Thanks for reporting back!

[NJBob]

Whoa I got my tires back up to 40psi and got 93 miles on the first bar. Could be a coincidence. In NJ I can't fill my own tank and the attendant was squeezing the trigger to round my fill up to $18 so I may have had more gas up the filler pipe than usual. It's my 5th tank with Lucas UCP and I really wanna see some improvement. We'll see what my next fill gets next week.

[dallas]

I have seen a test where they oxidize fuel with acid in a test tube and then add Fuel system cleaners to try to get the oxidized fuel/sludge that sinks to the bottom of the test tube to re- emulsify with the fuel so it can be burned out, The Lucas fuel additve just coats the test tube with a nasty sludge that requires scrubbing to remove. I think the only reason it may improve mileage is because you are adding lubricity to the fuel which in turn sprays into the combustion chambers and coats the upper rings to reduce friction, under the heat it will oxidize and end up collecting around the rings I would think. I would stay away from it, or if you want more mileage but are cheap buy Marvel mystery oil its basically a lubricity detergent too. Hell even ATF might work.[/I]

[NJBob]

So...do you think since my Yaris is only a year old that Lucas UCL is kind of useless as far as improving MPG at this point. Or is it better to use it all the time?

[gmodder]

Which one of these am i suppose to buy...Not sure what yall mean about ucl..

http://www.lucasoil.com/products/dis...?iid=5&catid=6

[NJBob]

Upper Cylinder Lubricant...adds to the gas tank 2-3 oz. per tankful.

[daf62757]

Originally Posted by NJBob

Upper Cylinder Lubricant...adds to the gas tank 2-3 oz. per tankful.

Has anyone experimented with more ounces per tank? Yesterday, I was filling up and had about 5 ounces let so I just put it all in the tank. My around town driving for the first bar was 72 miles...about 6 more than I usually get for city driving. So, has anyone else had some experience with putting more in?

[Yaris Hilton]

Speaking of carbon cleaners, I ran across B-12 Chemtool fuel additive in the Wal-Mart. Supposed to clean everything in the fuel system to the intake valves, when added to the fuel tank. I read the label and recognized the ingredients (toluene, methanol, acetone, 2-butoxyethanol a.k.a. butyl cellosolve, mixed xylenes and methylethylketone) as pretty much the same stuff I'd used in the old days poured in the carburetor to clean carbon out of the combustion chambers. So I got another can, warmed up the Nissan VG30E in my '98 Mercury Villager with ~108K miles, revved it up and ran about 1/4 can into the vacuum fitting right behind the throttle plate that the evaporative emissions canister hooks to, finishing by running it in fast enough to kill the engine. Pretty much just like the Seafoam procedure. Let it sit about 10 minutes, started it back up, gunned it hard a few times, drove it around and hit WOT up steep hills several times. Reset the trouble light (code set was P300, random multiple cylinder misfiring), poured the rest of the solvent in the tank, and it's good to go. Of course, I don't KNOW that it had caked up garbage on the intake valves and in the combustion chambers, but the '95 just like it started having problems with intake valves sticking and a cold engine knock that sounds like "carbon knock" around this mileage. And I've used truckloads of cheap off-brand gas. So I'll call it preventive maintenance.

[Yar Is Word]

Sorry Mr Bob that it's not working for you. I am using it in my Yaris and have not noticed much difference either, except for the smoother running. As I said before, I did get improvement using it in an Echo but that was after it had a couple years of wear.

[NJBob]

The bottle says it can't hurt if you overdose but I didn't read anything where you get better mileage that way.

[Klink10]

I put a full smaller bottle in. Kept it from the original purchase when I also got the mega bottle. Just refill from one to the other and place in car for next fillup. Have not noticed any significant improvement other than it feels smoother.