Gas Treatment on a NEW Car
#16
Rookie
iTrader: (15)
Clogging that is there (supposedly and in theory per the sales pitch) means nothing to the measurable performance/economy of the car during my lifetime, not a concern for those of us using exclusively correct grade of Chervon. My exhaust system has stuff there too, but I'm not paying to have the inside of it cleaned out.
But of course, I know the "feel good" factor about this type of stuff has merit from a marketing standpoint, and certainly boosts supplier profits.
#17
Lexus Fanatic
My car has always ran Chevron 91 octane since it rolled off the dealer's lot. I pulled my injectors out at 140k miles and bench test them to find out they were slightly clogged. I set the fuel pressure to 51 psi for the cleaning process and after running the cleaner through the injectors, the pressure dropped to 48 psi. That's 3psi of loss pressure due to clogging, which translated to an increase of 2-3 mpg on the highway for me. Having a thin film of byproduct in the exhaust pipe won't do anything because the exhaust pipe is much larger. On the other hand, the injector's spray tip is very small. Over a lifetime, most drivers will not notice anything because the changes are so gradual.
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Keep in mind my original post which mentions "lifetime", my ownership experiences don't involve keeping cars for over 10 years and for over 100K miles, so not applicable.
Last edited by IS-SV; 03-10-11 at 06:04 PM. Reason: sp
#18
Rookie
iTrader: (15)
The problem is most people think injectors either work or they don't (fully clogged). There is a difference between fully clogged and not running at optimal performance and most cars follow the latter. I've tested enough injectors to know 'quality' gas only helps reduce the amount of buildup, but it will not eliminate it because nothing is ever 100% clean in an internal combustion chamber. Over time, you WILL have buildups.
#21
Lexus Fanatic
iTrader: (20)
where is the evidence for this? for example, actual tests comparing engines driven with and without cleaners?
#22
Lexus Fanatic
iTrader: (20)
crickets.
#25
Rookie
iTrader: (15)
Sorry been busy for the last two days.
You can't really compare engine to engine because unless the injectors are ridiculously clogged, then you probably won't notice a difference in acceleration. Most cars fall under this category. In some older GM vehicles, injectors clogging was not uncommon at all, and the remedy was to use GM's fuel injector cleaner (great stuff). That did the trick for a while until it started clogging up again. I use them to maintain a good flowing injector. I went with Chevron 91 octane thinking it was all fine and dandy only to find my injectors reducing fuel pressure.
Most people won't care to use cleaners, then again most people don't ever change the coolant and brake fluid either.
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