Exhaust Fumes and Fuel Power

[JHZR2]

kevsl:

My GF's integra has 161k and passes the emissions sniffer every time, never had a CEL and is on the original O2 sensor. My father's previa has 186k is the same deal as the integra, and passes NJ dyno emissions sniffer test every time. Neither car has ever had additives until recently, and are both on original cats.

But, both were highway drivers - I think thats the real thing that has granted them (and probably yours) long life. I think its the heating and cooling that wrecks the catalysts and supports, causing a cat to go bad or get 'poisoned'. Unless of course the additive has sulfur in it, or doesnt combust / retards combustion until it gets near the cat there is no real way I can see for the cat to be poisoned. Gasoline additives should be low in P, S, etc., and should combust readily or improve combustion, otherwise its a lousy additive. They ought to improve catalyst life overall. So I think youre exactly right.

JMH

[ January 17, 2005, 09:54 PM: Message edited by: JHZR2 ]

 

[kev99sl]

quote:

---

Originally posted by BlazerLT:

quote:

---

Originally posted by vwoom:

quote:

---

Originally posted by BlazerLT:
you are seeing the tetbook definition of constantly using chemicals in your fuel.

It will eventually poison your cat.

---

This is the liquid/condensate that actually is a byproduct(nuisance if you ask me)of combustion and it eats up/rusts up your muffler..its acidic. I remember it ate up my old '90 Civics' sidewise mounted muffler pretty quickly. And this was w/o FP in SoCal clime...

---

Your cat is made to clean and scrub standard combustion exhaust, not additives.

No one can claim that using an additive like FP every tank full will not poison you cat.

Fuel additives are just not needed today.

A completely tuned up engine with quality fuel will keep itself clean with no problems.

It is when people don't tuneup their engines that problems like this occur.

---

Yeah. That's why the 5 cars I take care of, all with at least 150,000 miles (and one with 208,000) have all been given a steady diet of various gas additives regularly since new and all have their original converters. How lucky is that?

 

[BlazerLT]

quote:

---

Originally posted by 1maniac:

quote:

---

Fuel additives are just not needed today.

---

Tell GM and BMW that.

---

I'm saying extra additives, not the additives already in the fuel.

Holy literal batman.

 

[1maniac]

What I was getting at was both GM and BMW have presented papers to the SAE showing that additive levels in current pump gasoline are not enough to prevent deposits.

Should have posted that before.

 

[novadude]

If you have a '96-up OBDII car, you will know it if your cat has become "poisoned". These cars have "after cat" O2 sensors that are very sensative in changes to cat function. In fact, replacing the cat with a (new) high flow aftermarket unit is enough to trigger a SES light, so folks running aftermarket cats use "MIL eliminators" to "trick" the PCM.

I've been using FP for a good 30k miles now, and I am seeing no SES light. Driving around with a scan tool displaying "real time" data shows me that the long term and short term fuel trims are where they should be, and the O2s are switching properly (pre and post cat). Based on this, I am not worried about continuous FP use hurting emmisions devices.

 

[kev99sl]

quote:

---

Originally posted by JHZR2:
kevsl:

My GF's integra has 161k and passes the emissions sniffer every time, never had a CEL and is on the original O2 sensor. My father's previa has 186k is the same deal as the integra, and passes NJ dyno emissions sniffer test every time. Neither car has ever had additives until recently, and are both on original cats.

But, both were highway drivers - I think thats the real thing that has granted them (and probably yours) long life. I think its the heating and cooling that wrecks the catalysts and supports, causing a cat to go bad or get 'poisoned'. Unless of course the additive has sulfur in it, or doesnt combust / retards combustion until it gets near the cat there is no real way I can see for the cat to be poisoned. Gasoline additives should be low in P, S, etc., and should combust readily or improve combustion, otherwise its a lousy additive. They ought to improve catalyst life overall. So I think youre exactly right.

JMH

---

Of the five, mine is the only one that sees regular highway use. But, the point is that additives have had no detrimental effects. In fact, I've been told for the past 100,000 miles or so that my cat is bad: it rattles like crazy. But that was 108,000 miles ago, and I pass every emission test with flying colors, so go figure.

 

[Gary Allan]

Now I don't do this in my newer vehicles ..but as far as cat poisoning goes ..I just don't see it in my experience. Now some refined (too refined as we are finding out) Euro or high end Asian model ..there may be issues, but I've run MMO by the quart with ATF in the fuel...loads of Techron ..SeaFoam AND on top of that had LOADS of oil (at least 5k with HDEOs) FOGGING my 92 Carvan's ORIGINAL cat before I used Auto-Rx via leaking valve seals (30k of this fogging).

..and it still passes with flying colors. I only have to retard the timing to get NOX in line since the engine has no EGR.

So ..based ONLY on my experience ...how can I take cat poisoning too seriously?

Now, granted, mine is only $75-90 to replace ..so I can afford myself a little "saboteurs" license here ...but

 

[Bugshu]

I think that Gary and Terry are right.

Its been warmer the last 2 days and the smell went away.

Go Fuel Power !!!

Happy Motoring All,

Bugshu

PS. We need a graemlin with a car taking off like on a quarter mile run.