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At great risk of being accused of being fooled by snake oil salesman, I'm going to mention a product which is new to me, and hasn't yet been dissected by the technical gurus on this site. I haven't tried it. It is called ca40g, and is sold on a website of the same name. It promises (not surprisingly) better mileage. Its claims seem very reasonable, yet striking. It is not an octane booster; it serves to get more out of the octane you have. I'm not gonna say any more. It's there if any of you are curious.
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Re: Latest mileage booster miracle
"it serves to get more out of the octane you have"
I guess I need a further explanation of this statement. Something that a dumb engine system/themodynamics engineer like me can understand.
Duke -
Re: Latest mileage booster miracle
Duke, That sentence was my version of what I read on the website. My sense is that at the price per treatment, it would be worth a try, but only if someone I trust was comfortable that no harm will come to my 1995 Infiniti. No amount of trust would cause me to put it into my Vette.Comment
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Re: Latest mileage booster miracle
Duke,
What is themodynamocs?Comment
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Re: Latest mileage booster miracle
The statement makes no techincal sense. I'm not knocking you as I'm sure I would have the same comment if you quoted the text directly. It's probably just advertising gobbledygook.
Most 1995 cars have detonation sensors, so they will adjust to nearly any fuel octane. You could run regular unleaded, and the engine would likely not detonate. At worse you might feel a slight loss of low end torque due to the system retarding the spark slightly to prevent detonation.
I have recommended regular grade fuel to many friends whose late model cars "require" premium. In all cases they detected no detonation or change in operational characteristics or fuel economy.
My 1988 Mercedes 190E 2.6 "requires" 91 PON fuel on a specified 9.2:1 CR and has no detonation sensor. (Well, actually it does - ME!) Since I now only drive it in the fall thorugh spring, I tried regular and detected only slight transient detonation on warm days (above 65-70F). In order to improve around town fuel economy, which is primarily how its used, I quickened the centrifugal spark advance curve, which in the case of this engine's digilog ignition system requires swapping an easily replaceable trim resistor.
This improved low end torque to the point where I could shift at lower revs and run in a higher gear at many intown speeds. (Fifth is now useable down to 35 rather than 45, which is a BIG difference.) The result is better performance and about ten percent better intown fuel economy - from high teens to low twenties. Road trip mileage is essentially unchanged at high twenties.
On the downside it exhibits a little more propensity to detonate, especially in warm weather, but it's transient in nature, and I have learned to "drive around" it by feeding in the throttle a little slower on upshifts (or shifting at higher revs) when it's warm outside or when the engine temperature gets over 80C due to slow traffic. The mechanical fan clutch doesn't tighten until 100C and the auxillary electric fans engage at 105C, but it will stay at 80 in cooler weather with enough dynamic air flow through the radiator.
Even the new Corvette owner's manual says something on the order than "premium fuel is recommended but not required" for the LS2, however, for the LS7 they say "91 PON, minimum".
I usually swap back and forth between Arco and Chevron gasoline. I probably have a slight bias towards Chevron since I believe their Techron detergent additive, which is in all their gasolines is slightly superior to the generic additives.
A chemist in the petroleum industry recommended that I swap brands from time to time. He said that as each brand tends to have a slightly different detergent additive package, by swapping around, you get the benefit of all of them.
DukeComment
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A typo-and you added another in the last syllable *NM*
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Re: A typo-and you added another in the last sylla
Duke,
Glad you got the joke!!!
RogerComment
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