Since the model has a automatic timing adjuster, can 2000 ELANTRA adjust
to the higher octane (higher advance) gasoline and make full use of
it, or it is only a waste of money.
BMW, for example, will adjust fire timing according to the octane
rating, hence with higher octane gasoline (more cost) you will get more
I contacted Hyundai manufacturer and some local reps, yet nobody was
able to answer it. I tried this to test myself, but is very hard to
figure out without very precise measurements.
I was told that higher octane fuels have higher amount cleaning
additives to prevent this. And lover sulfur contamination, the most
destructive part. True, if the engine is not running at the correct
temperature, it will increase deposits. Some mechanics wrote, if you
would like to make 1/2 mil km on the same engine, you must use premium
gasoline. (Mercedes mechanic).
So, ELANTRA has the automatic timing build in, but it is limited to
regular gasoline only, so the engine will fail (cannot use higher
quality fuels) just as any regular car, it that the notion here? (We do
not want to compete with Mecry after all ;).
All EU high end cars use only higher octane gasolines.
That's utter nonsense if you try to apply it to all engines. Perhaps
Mercedes engines require premium fuel and if they do, you should use it.
Frankly, this sounds like VERY OLD information (50's or '60's perhaps?),
probably from an old mechanic.
No, that's just nonsense based on faulty information.
The problem is that higher octane fuels burn more slowly than lower
octane fuels. When you use high octane fuel in an engine designed for
lower octane, it doesn't burn completely and it creates deposits. As for
additive packages, there is little or no difference anymore between fuel
grades, so there's no advantage there. All modern fuels will keep your
engine clean, providing you're using the correct fuel to begin with. I
don't believe there's any difference in sulfur content either, as it's a
regulated pollutant (sulfur dioxide). Sulfur is more of an issue in
The computer controlled ignition timing is there to prevent knocking,
pinging and detonation in the event that poor quality fuel with a lower
than recommended octane rating is used. It does so by retarding the
timing. It will not advance the timing beyond its normal parameters if
high octane fuel is used, so there is no benefit. If you really WANT to
pay the extra money for premium fuel, you can have your ECU
re-programmed to advance the timing more and gain some horsepower in the
process, but you'll void your engine warranty. The BSEPowerchip does
The chips for the 2.0L Tiburon work in the Elantra (same engine).
That's irrelevant. If the engines are designed for premium fuel, use it.
If not, use what the manufacturer recommends. In Hyundai's case, that
means 87 octane regular unleaded.
The additive part was true two decades ago, but not anymore. The
statement the mechanic made is not true for all engines. It may be true
for high compression engines that really need the higher octane to avoid
detontation, but it certainly isn't true for engines designed for 87 octane.
"The additive part was true two decades ago, but not anymore."
CHEVRON gas station claim that premium gas have "more" Techlorin than a
regular gasoline. It this claim untrue?
Also, higher octane gasoline presents a less sulfur content due to
higher fuels (More expensive as Pentane, Hectane, Octane, alcohol etc.
All additives to increase octane ratings). This itself would increase
the engine life span. (Mechanic comment) Regular benzene (87)is an
inferior fuel by a comparison. Unfortunately, Hyundai does not utilize
this option due to the low cost targeted market. Your power and the
lifespan of the engine would be determent then by an octane rating, not
by the manufacturer.
I prefer options...............
I rarely buy Chevron gasoline, but I've never seen this claim at a
Chevron station. They claim their gasolines with Techron (never heard
of Techlorin) clean better than other brands of gasoline, but I've not
seen a claim of their premium having more Techron than their regular.
However, this wouldn't surprise me because, as someone else posted
earlier, high octane gasolines are more prone to cause combustion
chamber deposits so it only makes sense that Chevron would add more
Techron to help mitigate this problem.
Personally, I prefer good information more than options. You are
getting bad information. Don't take my word for it. Search around on
your own. The information is plentiful. Here's just one sample I found
in less than 5 seconds.
I have searched for years and found nothing, more articles just like the
link above. All abstract talk, no formulas, no real manufacturers. It
does not even address the sulfur contaminants, or describe who really
make a good low octane gasoline. (No, there are not all the same). All
talks we all already know. Rule of thumb, a good information do not come
from the Internet, but from the mechanic who fix the car every day. And
he got no time to write about it, because he is fixing it.
Of course, the exception is the "HYUDNAI mechanic" helping us here.
For example, please help me to find which gasoline manufacturer has the
lowest and which highest sulfur content? The real engine and
In my area, nearly all the assorted national and local gasoline chains
pull their fuel from the exact same tank farm. The fuel comes in from
ONE pipeline. If there was any difference at the refinery, it's become
generic gasoline by the time it reaches the tanks.
Chevron, BP, Quik Trip, Phillips 66, Sams Club/Walmart, Costco, and
countless others all pull gas from the same place. I see the trucks
every day. The ONLY difference is the name on the side of the tanker
truck, which sometimes have no names at all just to keep it
Some of these trucks carry their load to other terminals where it gets
put into tanks again, remixed with other tanker loads, and sent out
again sometimes in brand-name trucks, which have absolutely nothing to
do with the brand of fuel inside. It's just generic gasoline.
Given that the fuel is more or less the same, I pay little attention to
price (some people obsess about saving 10 cents a fill. A dime is not
worth a bother imo) and pay MUCH more attention to whether the gas
station maintains their pumps and tanks, whether they seem to actively
worry about water seeping in, whether the apron is filthy or not, and
The fuel can be 5-star perfect name brand ultra octane stuff but it's
going to be worthless junk if it's full of water because some fleabag
gas station couldn't be bothered to monitor their quality. Given how
little stations make selling gas, quality is often the last thing they
Drivers also sabotage themselves by letting their cars run down to near
empty before refilling. Super fuel is not going to help with that
I think he's referring the the problem of water accumulation in the
tank. With the new MTBE-free fuels containing 10% ethanol, it's no
longer a problem as you effectively have "dry gas" added to every tankful.
Water and dirt and other debris.
Tanks rusting from the inside out is another issue. Plastic fuel tanks
have ended that.
Fuel also acts as coolant for the in-tank fuel pumps. Run it dry
enough and the pump will overheat and possibly wear faster.
Brian Nystrom wrote:
This is an issue even if the tank is half full as water and most debris
is heavier than gasoline and sinks to the bottom anyway.
What does tank rusting have to do with running near empty?
Yes, we've discused this hear before. I believe this is an OWT, but
many still believe it. I don't know if hyundaitech has ever weighed in
on this one though? How about it hyundaitech, does Hyundai have any
official word on fuel pump cooling/life as a function of running the
tank near empty?
Assuming the tank is rusting inside, once the fuel level drops, more
surface will be exposed to air, oxidize, and produce loose particles
This happened to car in my extended family. It was always driven with
less than a quarter tank of fuel to save weight and eventually the tank
rusted from the inside out and sent debris through the fuel lines and
clogged the fuel filter.
I am pretty sure I've read that in more than one owners manual.
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