Hey guys i just bought a 1999 supercharged lss oldsmobile and have no idea what kind of gas the previous owner put in it and was wondering should i put unleaded in it or premium since its supercharged i was thinking go with premium but not sure?
1999 oldsmobile lss supercharged premium or unlead
- Thread starter boostedtsiawd
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owners manual is your friend
http://www.oldsmobile.com/content/dam/ol...ners-manual.pdf
that one? Googled it.
http://www.oldsmobile.com/content/dam/ol...ners-manual.pdf
that one? Googled it.
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Sweet car!! Post some pics :^)
gathermewool
Site Donor 2023
Since when did they start adding lead to premium again!?
You probably need premium since it's supercharged.
I had an '02 Grand Prix GTP which should be the same supercharged 3800 V6 Series II as yours. If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM. I think in '04 models (series III) they said you could run a lesser octane but that would cost you 30 or so horses.
ls1mike
$50 Site Donor 2024
I think he mean 87 vs Premium.
Again have owned three of the supercharged 3800, run premium. They do not care for 87.
Again have owned three of the supercharged 3800, run premium. They do not care for 87.
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
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Yep,use premium. My Olds Trofeo would ping under heavy acceleration if I didn't use premium.
My previous SC Buick required premium as well, it was a 2000 model
Be sure to check the oil in the S/C, probably has never been changed. Stinks to high heaven.
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Originally Posted By: Merkava_4
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
Basic oil and filter of your choice... premium 91 or 93 gas... a blast of fuel conditioner every few months... replace air and fuel filter... plugs... fresh battery... supercharger may have some internals that need cleaning... after 16 years... gotta be some Oldsmobile websites with lots of info...
Sounds like a fun car... kinda rare...
Sounds like a fun car... kinda rare...
Originally Posted By: expat
When was Leaded fuel last a requirement for North American made Autos?
Mid 70's?
Unleaded-ready engines started showing up around '71, were prutty much universal by '73, and unleaded was mandatory for the first time (first year of catcons) in 1975.
When was Leaded fuel last a requirement for North American made Autos?
Mid 70's?
Unleaded-ready engines started showing up around '71, were prutty much universal by '73, and unleaded was mandatory for the first time (first year of catcons) in 1975.
Originally Posted By: Brybo86
Originally Posted By: Merkava_4
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
When I lived in Denver, the three octanes were, I think, 85, 87, 91. Not sure about the regular number, though. When I drove up to Georgetown (8500 feet) one Christmas, I remember the regular gas was lower octane than in Denver, but 84 seems low even for that elevation. Denver might have been 86 and Georgetown 85.
Originally Posted By: Merkava_4
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
When I lived in Denver, the three octanes were, I think, 85, 87, 91. Not sure about the regular number, though. When I drove up to Georgetown (8500 feet) one Christmas, I remember the regular gas was lower octane than in Denver, but 84 seems low even for that elevation. Denver might have been 86 and Georgetown 85.
Originally Posted By: Brybo86
Originally Posted By: Merkava_4
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
I'm at 940 feet, and those are my usual choices at the pump. Very few places in the KC area offer 93.
Originally Posted By: Merkava_4
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
I'm at 940 feet, and those are my usual choices at the pump. Very few places in the KC area offer 93.
Originally Posted By: Benzadmiral
Originally Posted By: Brybo86
Originally Posted By: Merkava_4
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
When I lived in Denver, the three octanes were, I think, 85, 87, 91. Not sure about the regular number, though. When I drove up to Georgetown (8500 feet) one Christmas, I remember the regular gas was lower octane than in Denver, but 84 seems low even for that elevation. Denver might have been 86 and Georgetown 85.
I traveled through that area this summer, and the regular was 85. I opted for premium and got good mileage. I was driving the 3.5 Challenger, and out west in SD I got 35 mpg. I was stunned it got so good.
Originally Posted By: Brybo86
Originally Posted By: Merkava_4
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
When I lived in Denver, the three octanes were, I think, 85, 87, 91. Not sure about the regular number, though. When I drove up to Georgetown (8500 feet) one Christmas, I remember the regular gas was lower octane than in Denver, but 84 seems low even for that elevation. Denver might have been 86 and Georgetown 85.
I traveled through that area this summer, and the regular was 85. I opted for premium and got good mileage. I was driving the 3.5 Challenger, and out west in SD I got 35 mpg. I was stunned it got so good.
What does it say on the inside of the fuel filler lid? That would be your answer.
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