85 to 89 Octane Update

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Mindy - 06 Sep 2007 17:22 GMT

to follow up my last post, I refilled my 2001 Grand with 89 octane gas
rather than the cheapest gas of 85....there was a good differance in the
mountain pass lanes, I had more power to keep up with the speed limit and
even passed others on Interstate 70....maybe a bad tank of 85 but still I
will go with the 89 till I get down out of the 8 to 10,000 ft range of
highways....

I did the usual pretrip maintence, new airfilter, oil change , new tires &
alignment and tune up....

thanks to all for your input, even Bill... : )

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SnoMan - 06 Sep 2007 19:29 GMT

>to follow up my last post, I refilled my 2001 Grand with 89 octane gas
>rather than the cheapest gas of 85....there was a good differance in the
[quoted text clipped - 7 lines]
>
>thanks to all for your input, even Bill... : )

I would suggest that you stay with 89 or better down in the low lands
too.
-----------------
TheSnoMan.com

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L.W. (Bill) Hughes III - 06 Sep 2007 22:57 GMT

You may notice an increase in mileage, too. Probably enough to nullify
the price difference.
God Bless America, Bill O|||||||O
mailto:LWHughes3rd@aol.com http://www.billhughes.com/

> to follow up my last post, I refilled my 2001 Grand with 89 octane gas
> rather than the cheapest gas of 85....there was a good differance in the
[quoted text clipped - 7 lines]
>
> thanks to all for your input, even Bill... : )

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Spdloader - 06 Sep 2007 23:54 GMT

> to follow up my last post, I refilled my 2001 Grand with 89 octane gas
> rather than the cheapest gas of 85....there was a good differance in the
[quoted text clipped - 7 lines]
>
> thanks to all for your input, even Bill... : )

I always run the highest octane I can get. Starts better, runs better,
better fuel mileage, cleaner intake and injectors over the long haul, and
only about $6 to $8 dollars more per tankfull. Better than any additive I
can buy.

Just my .02

Spdloader

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98XJ - 07 Sep 2007 02:54 GMT

With other cars (never a problem with my XJ), when I have had pinging
on a full tank of gas, I have added a few mothballs (nitrobenzene)
into the tank. It has not shown any harm to the engines of several of
my own or other family members' cars/trucks, and some permanently cut
to a lower-than-reccommended octane by adding a few at each fill-up.

...and their woolen seat covers seem to last longer, too.

>> to follow up my last post, I refilled my 2001 Grand with 89 octane gas
>> rather than the cheapest gas of 85....there was a good differance in the
[quoted text clipped - 16 lines]
>
>Spdloader

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Spdloader - 07 Sep 2007 03:29 GMT

> With other cars (never a problem with my XJ), when I have had pinging
> on a full tank of gas, I have added a few mothballs (nitrobenzene)
[quoted text clipped - 3 lines]
>
> ...and their woolen seat covers seem to last longer, too.

lol

Spdloader

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Lon - 08 Sep 2007 16:47 GMT

Yeah, but you gotta admit, it is kinda hard on the local moth
population, and sooner or later some tree hugger is gonna come after you
for removing them from all those moths.

Seriously, a can or two of a few of the better engine boosters every few
tankfuls seems to work about as well.

Allegedly the old mothballs in the tank is an urban legend.

98XJ proclaimed:

> With other cars (never a problem with my XJ), when I have had pinging
> on a full tank of gas, I have added a few mothballs (nitrobenzene)
[quoted text clipped - 24 lines]
>>
>>Spdloader

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noneofyourbusiness - 08 Sep 2007 20:04 GMT

>Yeah, but you gotta admit, it is kinda hard on the local moth
>population, and sooner or later some tree hugger is gonna come after you
[quoted text clipped - 4 lines]
>
>Allegedly the old mothballs in the tank is an urban legend.

30+ years ago, mothballs were made with Naptha, which boosted
something (octane?) in the gas and made it seem like you had more
power (Never tested it with any actual measuring device). Supposedly,
you ran the risk of deteriorating any rubber hoses that came in
contact with the mixture, but I never used them enough to see that
happen.

But at some point in the past they stopped using Naptha, and mothballs
were made with a different chemical that wouldn't be considered a
gasoline "additive" <g>.

...

>98XJ proclaimed:
>
[quoted text clipped - 26 lines]
>>>
>>>Spdloader

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Lon - 08 Sep 2007 16:44 GMT

Mindy proclaimed:

> to follow up my last post, I refilled my 2001 Grand with 89 octane gas
> rather than the cheapest gas of 85....there was a good differance in the
[quoted text clipped - 7 lines]
>
> thanks to all for your input, even Bill... : )

Try the midgrade if you have the 4.0. A tad cheaper than premium and
seems to work just as well.

I was never able to burn anything but Valero regular in a 4.0 ZJ [stock
except for cat back] down around sea level in California/Nevada without
mild pinging. Midgrade worked for the other brands.

Spring and summer in Colorado I was able to run regular from just about
any brand and still pass the "I-70 test" from Idaho Springs up and over
the pass. However, now that they appear to be cutting over to winter
blends, I've had to move up to mid grade to keep the mild ping down and
slog it up the hills. Debating a stroker, but also debating an SRT-8
heh heh.

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