SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: 87 Octane in SL55?? Only choice?

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Old Sep 24, 2008 | 07:07 AM
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87 Octane in SL55?? Only choice?

Well my city is experiencing a major gas shortage it seems, most pumps are completely out and everyone that has any ONLY has regular, no mid grade or high test. Actually just to get home yesterday I put 3 gallons of regular in the car otherwise i don't think i would have made it back to the house

Is it ok to put a tank of regular in this thing until the gas situation gets straigthened out or should i just leave it parked and drive another vehicle?
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Old Sep 24, 2008 | 07:13 AM
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If you are in a temporary crunch the car will manage, but be very gentile on the accelerator.
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Old Sep 24, 2008 | 09:30 AM
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Originally Posted by drhodes
...Is it ok to put a tank of regular in this thing until the gas situation gets straigthened out or should i just leave it parked and drive another vehicle?
The ECU should and almost certainly will reduce power to keep the engine from knocking on the 87. Of course if you hear engine knocking you should immediately reduce throttle. Later, as you replace the 87 with 91+ the ecu should and probably will gradually increase power.

Personally I'd probably park the car and wait for better gas.
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Old Sep 24, 2008 | 09:32 AM
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What city are you in?
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Old Sep 24, 2008 | 11:26 AM
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I am in charlotte, NC

i HAD to put 3 gallons of regular in it yesterday as I was afraid i wouldn't even make it home. I'll probably head down to SC this evening(25m or so) and see if i can find some premium. It isn't my everyday driver car so i can park it, but i do like cruising to the gym in the evenings with the top down so i got to find me some premium...lol
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Old Sep 24, 2008 | 11:49 AM
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What about adding an octane booster?
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Old Sep 24, 2008 | 12:12 PM
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The ECU will adapt to the lower octane by cutting the timing, among other things. These engines have so many sensors and the ECU is so protective, the car will be OK... just don't ask for big performance right now as all of the horses won't be in the barn!

You can add 3 oz. of acetone to 15 gal of gas and it will help raise the octane.
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Old Sep 25, 2008 | 05:03 PM
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it will do just fine. make sure you dont wot it though.

alex
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