Hi,

I tend to use an octane rating of 91 or higher for my 2002 Camry LE V6 since
Day 1. Since its very cold here in Canada, is there any benefit of running
regular fuel vs. premium fuel?

Does a Camry V6 require premium fuel? If not, using regular fuel would have
the benefit of being less expensive.

"Car Guy" <ac222@hotmail.com> wrote in message
news:RdnNb.2652$c1.490023@news20.bellglobal.com...

The V6 Engine "recommends" premium fuel, so I follow the recommendation.

"Ghislain" <ghislaing@potsi.com-ISP_Name_Reversed> wrote in message
news:s_nNb.2838$PK6.29890@nnrp1.uunet.ca...

"Car Guy" <ac222@hotmail.com> writes:

In the 2004 manual, it says 91 will give you "increased performance"
and so it's recommended, but I've read that increased performance is
about 1hp or so....

--
Alan Shutko <ats@acm.org> - I am the rocks.
"I own the erasers for all the miniature golf pencils."

The compression ratio of your engine is 10.5:1. Anything is above 10, the high octane fuel is recommended. Even there is a knock sensor to readjust the timming to eliminate knocking but the performance and fuel economy would get lower.

In
news:c95fdc526d5fc526c7272d0deef8a42e@localhost.ta lkaboutautos.com,
canoe2 <ano@yahoo.com> being of bellicose mind posted:
Ignition timing is not the exclusive variable available to the ECM to
limit detonation. There is also EGR which can be accomplished by the
traditional EGR valve, Variable Valve timing that IS adjusted to
increase valve overlap at lower engine speeds depending on load to
contaminate the fresh A/F charge with exhaust, and mixture enrichment
within program limits. There are motorcycle engines with 11.8:1 that
have no EGR and no knock sensors.
--

-Philip

"Whatever is a choice will become chosen"

Alan Shutko <ats@acm.org> spake unto the masses in
news:87llo96x2h.fsf@wesley.springies.com:


91 WHAT? RON or AKI? This is critical.


--
TeGGeR®

"Tegger®" <teggeratistopdotcom@changetheobvious.invalid> writes:

It said 91 octane, and some higher "research octane". I don't recall
the exact number. It didn't say anything about AKI.

--
Alan Shutko <ats@acm.org> - I am the rocks.

Alan Shutko <ats@acm.org> spake unto the masses in
news:871xq0vssb.fsf@wesley.springies.com:


If the manual specified 91 and then a higher number that it called
"Research Octane Number" (RON), then it means 91 "pump octane".

Pump octane is also known as "Anti-Knock Index" (AKI).

91 AKI is about 96 RON.

--
TeGGeR®

I have an '88 camry, 4 cyclinder. What type of fuel would be the best for
me? Do I want something with or without additives? What pump octane #
would be the best? I am a novice and I am learning lots from reading the
newsgroup. Your help and advice is greatly appreciated.

Rob
"Tegger®" <teggeratistopdotcom@changetheobvious.invalid> wrote in message
news:Xns94729349D7BCCteggeratistop@207.14.113.17.. .

"gbfox" <gbfoxx@netscape.net> spake unto the masses in
news:40159b21_5@newsfeed.slurp.net:



I hope your computer's clock is set correctly. And I hope your ISP's news
server isn't totally screwed, because your posting date is set to this past
Sunday.

As far as your octane requirements go, originally your car called for 87
pump octane, or Regular. In the winter you're fine with that. In the
summer, listen for a light rattling noise from the engine under heavy
acceleration or heavy load. If you hear this, and the noise goes away if
you let off the gas, then you need to upgrade to the next higher octane
level (89?) to see if that makes the noise go away.

Also, all gas has additives. You're either on the West coast or in the
western mid-west (traces to you appear to stop in Cheyenne, Wyoming, after
which point pings are not returned). Those living out there will be best to
tell you wchich brands work best with your engine.

--
TeGGeR®

About the only thing premium fuels do that regular fuels do not
do is allow the engine to run at a higher compression ratio. If
you engine is designed to run on regular 87 octane, then use 87
octane. The ONLY benefit of using a higher octane fuel then
necessary is to the oil company, in more profit per gallon,
period.

mike hunt



gbfox wrote:

MikeHunt2@mailcity.com spake unto the masses in
news:40170E3A.3C1CC433@mailcity.com:



Well, no. Some older cars (outside of certain select areas that use MTBE)
can develop combustion chamber deposits that can raise the effective
compression ratio, requiring a slightly higher octane rating despite the
manaul's specification, which is why I suggested to the OP that he listen
for pinging.


--
TeGGeR®

Regular is usualy good, adding alcohol absorbes any water that may
freeze in your system if you are in a very cold climate. If your car
is difficult to start when real cold high octane may help. One good
rule is find out when your station gets it deliveries and dont get gas
around that time. If tanks are to low you get all the water and crap,
When the tanker is there its all a mixed mess. a day later its all
settled and good gas again. Yes its station managment. But my local
station was blamed for 10 cars needing tanks cleaned once. Crap
happens, thats why toyotas fuel filters make many other cars filters a
total joke, toyotas are 50 times larger than many ive seen. If you
think youve got bad gas throw in a couple cans of Heat . I once got a
load of gas so bad it took 2- two Quarts of alcohol to get a T Bird to
run ok.

Thanks for the information. I live in norwest Iowa.
Now...about the computer. My clock is set with the correct time and date.
Any suggestions on what to do about the news server?

Thanks again. This group is very informative and helpful.

gbfox
"Tegger®" <teggeratistopdotcom@changetheobvious.invalid> wrote in message
news:Xns947DC5A558D2teggeratistop@207.14.113.17...

I too live in Iowa. Use the 89 octane, it's cheaper than 87 because it has
ethanol added and ethanol is produced here.

Josh
gbfox wrote:

Short personal story. My ol Prizm had been running fine. Some evil
spirit made me buy a bottle of HEAT. Tossed it in and took off on
errands. About 50 miles later the car was surging ... acting just
like it was running low on gas. I limped home. Long and short of
it, the fuel filter is hygrophobic, meaning water will not pass
through it. The filter was filled with water to the point of choking
off gasoline flow! The total contents in the filter was water!
Good thing I was near the 'E' mark. Since this was late on a Sunday,
I shook out the filter's contents, blew it out with compressed air,
and reinstalled it. Problem solved.
--

- Philip @ Maximum Torque RPM



In news:507-40171563-78@storefull-3135.bay.webtv.net,
m Ransley <ransley@webtv.net> being of bellicose mind posted:

"Car Guy" <ac222@hotmail.com> wrote in message news:<RdnNb.2652$c1.490023@news20.bellglobal.com>. ..
yes, the benefit is that it'll save you money. premium (high octane)
fuel is made to resist knocking so that the engine computer can
advance the timing a bit and give you more power (at the expense of
gas milage). but it's not a lot more power, and it's usually not
worth the expense to go to high octane. in the summer, the hotter
running engine sometimes make knocking a little more prevalent, so
sometimes you may need to increase your octane in the summer.

mike

Philip are you saying the Heat did it , brought water to the filter or
it was just bad gas, and an empty tank. If you were near empty and put
in heat yes the water on the bottom could mix into the alcohol .
Interesting , so never put heat in a empty tank?

In news:11475-4017444B-48@storefull-3136.bay.webtv.net,
m Ransley <ransley@webtv.net> being of bellicose mind posted:
I implied that HEAT® (methyl alcohol) and gasoline will pass thru the
hydrophobic filter media but the water that latched onto the alcohol
would not. When the three liquids met the filter, the water
separated out there and fairly quickly choked off nearly all fuel
passage. The fuel tank had only 2-3 gallons in it upon arrival home
and I do not believe is relevant because alcohol picks up water
irrespective of fuel tank level.

Moral of the experience is if you use such a fuel "drier", one should
not be surprised to find a hydrophobic filter soon clogged up with
water. Had the filter media been able to pass water, then the
fuel/alcohol/water mixture would have passed out the exhaust pipe.
But I should add that water is CORROSIVE to fuel injector parts,
particularly the pintle shaft and sealing surfaces within the
injectors.
--

- Philip @ Maximum Torque RPM