uphill, with a/c, high altitude, & a trailer: use premium gas?
07-31-2004, 12:41 PM
#31
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
The owner's manual doesn't reccomend the lower octane for late model
engines. Something about the various sensors not givng the computer the
correct info. Not sure which one might be involved, the O2 sensor should
be happy no matter what. Might be the MAF sensor.
As a side note: the lower octane should have a slightly higher BTU per
pound content = better gas mileage.
MontanaJeeper wrote:
>>Subject: Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
>>From: RoyJ spamless@microsoft.net
>
>
>>as you go up in altitude you can usually get by with a lower
>>octane.
>
>
> thats interesting. in north carolina @ 80 ft. elevation the "regular" unleaded
> is 87 octane. here in montana from 3500 to 11,000 feet the "regular" unleaded
> is 85.5. i often wondered why it was different out here, thanks for the
> information!
>
> to answer the original question i had no problems with my rubicon at 11,000
> feet. i wasnt towing anything but was climbing really steep grades with no
> noticeable loss in power. http://tinyurl.com/3bgzf
engines. Something about the various sensors not givng the computer the
correct info. Not sure which one might be involved, the O2 sensor should
be happy no matter what. Might be the MAF sensor.
As a side note: the lower octane should have a slightly higher BTU per
pound content = better gas mileage.
MontanaJeeper wrote:
>>Subject: Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
>>From: RoyJ spamless@microsoft.net
>
>
>>as you go up in altitude you can usually get by with a lower
>>octane.
>
>
> thats interesting. in north carolina @ 80 ft. elevation the "regular" unleaded
> is 87 octane. here in montana from 3500 to 11,000 feet the "regular" unleaded
> is 85.5. i often wondered why it was different out here, thanks for the
> information!
>
> to answer the original question i had no problems with my rubicon at 11,000
> feet. i wasnt towing anything but was climbing really steep grades with no
> noticeable loss in power. http://tinyurl.com/3bgzf
07-31-2004, 12:41 PM
#32
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
The owner's manual doesn't reccomend the lower octane for late model
engines. Something about the various sensors not givng the computer the
correct info. Not sure which one might be involved, the O2 sensor should
be happy no matter what. Might be the MAF sensor.
As a side note: the lower octane should have a slightly higher BTU per
pound content = better gas mileage.
MontanaJeeper wrote:
>>Subject: Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
>>From: RoyJ spamless@microsoft.net
>
>
>>as you go up in altitude you can usually get by with a lower
>>octane.
>
>
> thats interesting. in north carolina @ 80 ft. elevation the "regular" unleaded
> is 87 octane. here in montana from 3500 to 11,000 feet the "regular" unleaded
> is 85.5. i often wondered why it was different out here, thanks for the
> information!
>
> to answer the original question i had no problems with my rubicon at 11,000
> feet. i wasnt towing anything but was climbing really steep grades with no
> noticeable loss in power. http://tinyurl.com/3bgzf
engines. Something about the various sensors not givng the computer the
correct info. Not sure which one might be involved, the O2 sensor should
be happy no matter what. Might be the MAF sensor.
As a side note: the lower octane should have a slightly higher BTU per
pound content = better gas mileage.
MontanaJeeper wrote:
>>Subject: Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
>>From: RoyJ spamless@microsoft.net
>
>
>>as you go up in altitude you can usually get by with a lower
>>octane.
>
>
> thats interesting. in north carolina @ 80 ft. elevation the "regular" unleaded
> is 87 octane. here in montana from 3500 to 11,000 feet the "regular" unleaded
> is 85.5. i often wondered why it was different out here, thanks for the
> information!
>
> to answer the original question i had no problems with my rubicon at 11,000
> feet. i wasnt towing anything but was climbing really steep grades with no
> noticeable loss in power. http://tinyurl.com/3bgzf
07-31-2004, 12:41 PM
#33
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
The owner's manual doesn't reccomend the lower octane for late model
engines. Something about the various sensors not givng the computer the
correct info. Not sure which one might be involved, the O2 sensor should
be happy no matter what. Might be the MAF sensor.
As a side note: the lower octane should have a slightly higher BTU per
pound content = better gas mileage.
MontanaJeeper wrote:
>>Subject: Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
>>From: RoyJ spamless@microsoft.net
>
>
>>as you go up in altitude you can usually get by with a lower
>>octane.
>
>
> thats interesting. in north carolina @ 80 ft. elevation the "regular" unleaded
> is 87 octane. here in montana from 3500 to 11,000 feet the "regular" unleaded
> is 85.5. i often wondered why it was different out here, thanks for the
> information!
>
> to answer the original question i had no problems with my rubicon at 11,000
> feet. i wasnt towing anything but was climbing really steep grades with no
> noticeable loss in power. http://tinyurl.com/3bgzf
engines. Something about the various sensors not givng the computer the
correct info. Not sure which one might be involved, the O2 sensor should
be happy no matter what. Might be the MAF sensor.
As a side note: the lower octane should have a slightly higher BTU per
pound content = better gas mileage.
MontanaJeeper wrote:
>>Subject: Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
>>From: RoyJ spamless@microsoft.net
>
>
>>as you go up in altitude you can usually get by with a lower
>>octane.
>
>
> thats interesting. in north carolina @ 80 ft. elevation the "regular" unleaded
> is 87 octane. here in montana from 3500 to 11,000 feet the "regular" unleaded
> is 85.5. i often wondered why it was different out here, thanks for the
> information!
>
> to answer the original question i had no problems with my rubicon at 11,000
> feet. i wasnt towing anything but was climbing really steep grades with no
> noticeable loss in power. http://tinyurl.com/3bgzf
07-31-2004, 01:15 PM
#34
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
Which owner's manual and what octane are you talking about?
DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
SUPER) for the newer Jeeps.
RoyJ wrote:
> The owner's manual doesn't reccomend the lower octane for late model
> engines. Something about the various sensors not givng the computer the
> correct info. Not sure which one might be involved, the O2 sensor should
> be happy no matter what. Might be the MAF sensor.
--
__________________________________________________ _________
tw
03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport
There is a very fine line between "hobby" and "mental illness."
-- Dave Barry
Pronunciation: 'jEp
Function: noun
Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.
(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________
DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
SUPER) for the newer Jeeps.
RoyJ wrote:
> The owner's manual doesn't reccomend the lower octane for late model
> engines. Something about the various sensors not givng the computer the
> correct info. Not sure which one might be involved, the O2 sensor should
> be happy no matter what. Might be the MAF sensor.
--
__________________________________________________ _________
tw
03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport
There is a very fine line between "hobby" and "mental illness."
-- Dave Barry
Pronunciation: 'jEp
Function: noun
Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.
(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________
07-31-2004, 01:15 PM
#35
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
Which owner's manual and what octane are you talking about?
DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
SUPER) for the newer Jeeps.
RoyJ wrote:
> The owner's manual doesn't reccomend the lower octane for late model
> engines. Something about the various sensors not givng the computer the
> correct info. Not sure which one might be involved, the O2 sensor should
> be happy no matter what. Might be the MAF sensor.
--
__________________________________________________ _________
tw
03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport
There is a very fine line between "hobby" and "mental illness."
-- Dave Barry
Pronunciation: 'jEp
Function: noun
Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.
(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________
DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
SUPER) for the newer Jeeps.
RoyJ wrote:
> The owner's manual doesn't reccomend the lower octane for late model
> engines. Something about the various sensors not givng the computer the
> correct info. Not sure which one might be involved, the O2 sensor should
> be happy no matter what. Might be the MAF sensor.
--
__________________________________________________ _________
tw
03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport
There is a very fine line between "hobby" and "mental illness."
-- Dave Barry
Pronunciation: 'jEp
Function: noun
Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.
(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________
07-31-2004, 01:15 PM
#36
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
Which owner's manual and what octane are you talking about?
DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
SUPER) for the newer Jeeps.
RoyJ wrote:
> The owner's manual doesn't reccomend the lower octane for late model
> engines. Something about the various sensors not givng the computer the
> correct info. Not sure which one might be involved, the O2 sensor should
> be happy no matter what. Might be the MAF sensor.
--
__________________________________________________ _________
tw
03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport
There is a very fine line between "hobby" and "mental illness."
-- Dave Barry
Pronunciation: 'jEp
Function: noun
Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.
(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________
DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
SUPER) for the newer Jeeps.
RoyJ wrote:
> The owner's manual doesn't reccomend the lower octane for late model
> engines. Something about the various sensors not givng the computer the
> correct info. Not sure which one might be involved, the O2 sensor should
> be happy no matter what. Might be the MAF sensor.
--
__________________________________________________ _________
tw
03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport
There is a very fine line between "hobby" and "mental illness."
-- Dave Barry
Pronunciation: 'jEp
Function: noun
Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.
(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________
07-31-2004, 01:15 PM
#37
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
Which owner's manual and what octane are you talking about?
DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
SUPER) for the newer Jeeps.
RoyJ wrote:
> The owner's manual doesn't reccomend the lower octane for late model
> engines. Something about the various sensors not givng the computer the
> correct info. Not sure which one might be involved, the O2 sensor should
> be happy no matter what. Might be the MAF sensor.
--
__________________________________________________ _________
tw
03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport
There is a very fine line between "hobby" and "mental illness."
-- Dave Barry
Pronunciation: 'jEp
Function: noun
Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.
(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________
DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
SUPER) for the newer Jeeps.
RoyJ wrote:
> The owner's manual doesn't reccomend the lower octane for late model
> engines. Something about the various sensors not givng the computer the
> correct info. Not sure which one might be involved, the O2 sensor should
> be happy no matter what. Might be the MAF sensor.
--
__________________________________________________ _________
tw
03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport
There is a very fine line between "hobby" and "mental illness."
-- Dave Barry
Pronunciation: 'jEp
Function: noun
Date: 1940
Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.
(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________
07-31-2004, 01:38 PM
#38
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
A Colorado Cherokee has this in the build list: "Emissions - High
Altitude Tracking".
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
twaldron wrote:
>
> Which owner's manual and what octane are you talking about?
> DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
> SUPER) for the newer Jeeps.
Altitude Tracking".
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
twaldron wrote:
>
> Which owner's manual and what octane are you talking about?
> DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
> SUPER) for the newer Jeeps.
07-31-2004, 01:38 PM
#39
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
A Colorado Cherokee has this in the build list: "Emissions - High
Altitude Tracking".
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
twaldron wrote:
>
> Which owner's manual and what octane are you talking about?
> DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
> SUPER) for the newer Jeeps.
Altitude Tracking".
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
twaldron wrote:
>
> Which owner's manual and what octane are you talking about?
> DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
> SUPER) for the newer Jeeps.
07-31-2004, 01:38 PM
#40
Guest
Posts: n/a
Re: uphill, with a/c, high altitude, & a trailer: use premium gas?
A Colorado Cherokee has this in the build list: "Emissions - High
Altitude Tracking".
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
twaldron wrote:
>
> Which owner's manual and what octane are you talking about?
> DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
> SUPER) for the newer Jeeps.
Altitude Tracking".
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
twaldron wrote:
>
> Which owner's manual and what octane are you talking about?
> DC recommends 87, Reg. Unleaded or "low" octane (compared to MID and
> SUPER) for the newer Jeeps.