P
Pleasantly Surprized
How many out there use 87 octane in their turbo volvos instead of the
recommended 93 octane?
recommended 93 octane?
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W
WPWise
How many out there use 87 octane in their turbo volvos instead of the
My opinion on this is if they say use 93, then use 93. They say it for a
reason. My son put 87 in his Volvo 850 and it ran like crap. Oxygen sensor
issues, power issues, etc. Once he went back to 93, it ran much better. I had
a similar problem with a Toyota Cressida several years ago.
recommended 93 octane?
----------------
My opinion on this is if they say use 93, then use 93. They say it for a
reason. My son put 87 in his Volvo 850 and it ran like crap. Oxygen sensor
issues, power issues, etc. Once he went back to 93, it ran much better. I had
a similar problem with a Toyota Cressida several years ago.
B
blurp
Usually go with 91 'cause that's mostly the best I can get. If I see a
Sunoco I'll get 93. (83 240 Turbo)
Sunoco I'll get 93. (83 240 Turbo)
N
not telling
mmm
drives ok on 95 octane, like a rocket ship on 98 but 87 and 93??? sits
quicker to walk?
andy
940 2.3 fpt
drives ok on 95 octane, like a rocket ship on 98 but 87 and 93??? sits
quicker to walk?
andy
940 2.3 fpt
R
Rob Guenther
Where can you get 98 octane? If you're posting from Europe, remember that
our octane numbers in NA are lower, but they are measured differently.
our octane numbers in NA are lower, but they are measured differently.
M
Marvin Margoshes
Pleasantly Surprized said:How many out there use 87 octane in their turbo volvos instead of the
recommended 93 octane?
I use 83 octane in my 2000 S40. It is a little peppier when I put in the
recommended 93 octane, but the performance difference isn't worth the price
difference to me. I did the same thing with my 1987 SAAB 9000, and it never
hurt the engine.
M
Matt
With the aid of the little dash data thing that measures the fuel
consumption and the temperature outside, I unscientifically compared a
tankfull of 87 and 93 octane gasoline.
The difference in price per litre is about 10%.
The difference in consumption is about 10%.
My driving was similar on both tanks.
If my governement study grant comes through, I'll have more accurate
results.
I did not notice a difference in performance...2000 V70 no turbo, two
booster seats.
matt
consumption and the temperature outside, I unscientifically compared a
tankfull of 87 and 93 octane gasoline.
The difference in price per litre is about 10%.
The difference in consumption is about 10%.
My driving was similar on both tanks.
If my governement study grant comes through, I'll have more accurate
results.
I did not notice a difference in performance...2000 V70 no turbo, two
booster seats.
matt
M
Matt
I meant to say 91 octane NOT 93.
Matt said:With the aid of the little dash data thing that measures the fuel
consumption and the temperature outside, I unscientifically compared a
tankfull of 87 and 93 octane gasoline.
The difference in price per litre is about 10%.
The difference in consumption is about 10%.
My driving was similar on both tanks.
If my governement study grant comes through, I'll have more accurate
results.
I did not notice a difference in performance...2000 V70 no turbo, two
booster seats.
matt
H
Hamish Alker-Jones
On 4/8/04 6:23 AM, in article [email protected],
"Rob Guenther" <[email protected]> decided to come out from under
the bed and slurred:
Australia, from many different suppliers....
Hammo
Still sorting out the accident damage to the S70.....
"Rob Guenther" <[email protected]> decided to come out from under
the bed and slurred:
Australia, from many different suppliers....
Hammo
Still sorting out the accident damage to the S70.....
B
~^ beancounter ~^
--------------------------------
go out to a paint store or home depot
and pick up a can(1 gal) of xylene or
toulene ... make sure its 100%(usually is)
then mix in 4 oz of marvel mystery oil
for every 1 gal of xylene/toulene that
you put in ... just make sure that the
xylene/toulene mixture in your tank is
no more than 20-25% and you are fine
xylene is 115 oct and toulene is 110 oct
so if you have 5 gal of 91 in the tank
and put in 1 gal of xylene that makes you
mixture about 95oct .. which is good for 15+ psi ...
-------------------------------------------
go out to a paint store or home depot
and pick up a can(1 gal) of xylene or
toulene ... make sure its 100%(usually is)
then mix in 4 oz of marvel mystery oil
for every 1 gal of xylene/toulene that
you put in ... just make sure that the
xylene/toulene mixture in your tank is
no more than 20-25% and you are fine
xylene is 115 oct and toulene is 110 oct
so if you have 5 gal of 91 in the tank
and put in 1 gal of xylene that makes you
mixture about 95oct .. which is good for 15+ psi ...
-------------------------------------------
B
~^ beancounter ~^
--------------------------------
go out to a paint store or home depot
and pick up a can(1 gal) of xylene or
toulene ... make sure its 100%(usually is)
then mix in 4 oz of marvel mystery oil
for every 1 gal of xylene/toulene that
you put in ... just make sure that the
xylene/toulene mixture in your tank is
no more than 20-25% and you are fine
xylene is 115 oct and toulene is 110 oct
so if you have 5 gal of 91 in the tank
and put in 1 gal of xylene that makes you
mixture about 95oct .. which is good for 15+ psi ...
-------------------------------------------
go out to a paint store or home depot
and pick up a can(1 gal) of xylene or
toulene ... make sure its 100%(usually is)
then mix in 4 oz of marvel mystery oil
for every 1 gal of xylene/toulene that
you put in ... just make sure that the
xylene/toulene mixture in your tank is
no more than 20-25% and you are fine
xylene is 115 oct and toulene is 110 oct
so if you have 5 gal of 91 in the tank
and put in 1 gal of xylene that makes you
mixture about 95oct .. which is good for 15+ psi ...
-------------------------------------------
J
John Robertson
Here in Australia we are paying $AU 106.9 CENTS A LITRE at the moment
roughly $4.87.5 cents a gallon but if we use 98 octane its 116.9a litre or
roughly just over $5.35 cents a gallon . My car love 98 and goes well but on
less octane its sluggish .So I go 50\50 just now for around town but on a
trip its 98 octane ...now 82 litres by 116.9 a litre AU $95.85 to fill up .
roughly $4.87.5 cents a gallon but if we use 98 octane its 116.9a litre or
roughly just over $5.35 cents a gallon . My car love 98 and goes well but on
less octane its sluggish .So I go 50\50 just now for around town but on a
trip its 98 octane ...now 82 litres by 116.9 a litre AU $95.85 to fill up .
H
Hamish Alker-Jones
Good Glub!
Where are you?
Here in Albury/Wodonga it is still 97.5 cents/L with 98 being 8.5 cents
higher!
What car are you putting it in?
Cheers
Hammo
Where are you?
Here in Albury/Wodonga it is still 97.5 cents/L with 98 being 8.5 cents
higher!
What car are you putting it in?
Cheers
Hammo
B
Boris Mohar
--------------------------------
go out to a paint store or home depot
and pick up a can(1 gal) of xylene or
toulene ... make sure its 100%(usually is)
then mix in 4 oz of marvel mystery oil
for every 1 gal of xylene/toulene that
you put in ... just make sure that the
xylene/toulene mixture in your tank is
no more than 20-25% and you are fine
xylene is 115 oct and toulene is 110 oct
so if you have 5 gal of 91 in the tank
and put in 1 gal of xylene that makes you
mixture about 95oct .. which is good for 15+ psi ...
See http://www.vtr.org/maintain/gasoline-octane.html
Regards,
Boris Mohar
Got Knock? - see:
Viatrack Printed Circuit Designs http://www3.sympatico.ca/borism/
M
MACampbel
--------------------------
Or you could just drive out to the local general aviation airport and get some
100LL aviation gas.
go out to a paint store or home depot
and pick up a can(1 gal) of xylene or
toulene ... make sure its 100%(usually is)
then mix in 4 oz of marvel mystery oil
for every 1 gal of xylene/toulene that
you put in ... just make sure that the
xylene/toulene mixture in your tank is
no more than 20-25% and you are fine
xylene is 115 oct and toulene is 110 oct
so if you have 5 gal of 91 in the tank
and put in 1 gal of xylene that makes you
mixture about 95oct .. which is good for 15+ psi ...
Or you could just drive out to the local general aviation airport and get some
100LL aviation gas.
B
Bruce Pick
I did some miles-per-gallon tesing recently.
'86 240, non-turbo, auto trans. Tires at abotu 34-35 p.s.i. inflation
pressure (sorry, I don't have the metric conversion, but I use close to
the max pressure allowed for the tires). I drive 75 mi. each way to
work daily, about 2/3 highway and 1/3 on smaller roads. I get 25-26 mpg
on 87 octane and about 28 mpg on 89 octane. The percent improvement in
fuel economy seems to be greater than the percent increase in cost.
Further testing over the next week or so will give more data for better
accuracy. I definitely feel the engine is running more smoothly.
A Volvo mechanic I know described to me that the anti-knock sensor
retards the ignition timing when knock is detected, retarding by a
variable amount as needed to correct the knock. This gives reduced
performance and economy at those times. Higher octane will activate the
sensor less often, allowing greater ignition timing advance with more
mechanical energy delivered per drop of fuel. I suspect that best
overall economy occurs when the octane has been raised just enough so
that the knock sensor rarely retards the timing. Further increase in
octane will not result in more advance, thus no further increase in
energy realized from the fuel.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
To send email, remove all < > and [ ] and the junk ~ between:
[brucepick1]
< a~t >
[comcast.net]
'86 240, non-turbo, auto trans. Tires at abotu 34-35 p.s.i. inflation
pressure (sorry, I don't have the metric conversion, but I use close to
the max pressure allowed for the tires). I drive 75 mi. each way to
work daily, about 2/3 highway and 1/3 on smaller roads. I get 25-26 mpg
on 87 octane and about 28 mpg on 89 octane. The percent improvement in
fuel economy seems to be greater than the percent increase in cost.
Further testing over the next week or so will give more data for better
accuracy. I definitely feel the engine is running more smoothly.
A Volvo mechanic I know described to me that the anti-knock sensor
retards the ignition timing when knock is detected, retarding by a
variable amount as needed to correct the knock. This gives reduced
performance and economy at those times. Higher octane will activate the
sensor less often, allowing greater ignition timing advance with more
mechanical energy delivered per drop of fuel. I suspect that best
overall economy occurs when the octane has been raised just enough so
that the knock sensor rarely retards the timing. Further increase in
octane will not result in more advance, thus no further increase in
energy realized from the fuel.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
To send email, remove all < > and [ ] and the junk ~ between:
[brucepick1]
< a~t >
[comcast.net]