SL/R230: 93/100 Octane
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Joined: Aug 2023
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2007 MBZ SL550
93/100 Octane
I'm driving a 2007 SL550 and wanted to ask the rest of you about Octane. I always use 91-octane, but I've been hunting for 93. But what I'm finding in my search is not so much in finding 93 but 100. So, my question to the rest of you is this. Does anyone out there use 93/100 octane?
Thank you.
Thank you.
MBWorld Fanatic!
Joined: Sep 2007
Posts: 1,481
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95 SL600
There is no benefit to running higher octane in an engine that cannot use it. The engine won’t make any more power or increase fuel mileage. 91 octane is more than enough for your engine, 93 would also be fine, but not necessary, and 100 octane would be a waste of money.
Contrary to popular belief, higher octane fuel doesn’t contain higher btu’s, it has a higher flash point to thwart detonation and allow for more advanced timing. This allows the engine to make more power if the design allows.
Contrary to popular belief, higher octane fuel doesn’t contain higher btu’s, it has a higher flash point to thwart detonation and allow for more advanced timing. This allows the engine to make more power if the design allows.
Joined: Nov 2016
Posts: 7,847
Likes: 3,499
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I'm driving a 2007 SL550 and wanted to ask the rest of you about Octane. I always use 91-octane, but I've been hunting for 93. But what I'm finding in my search is not so much in finding 93 but 100. So, my question to the rest of you is this. Does anyone out there use 93/100 octane?
Thank you.
Thank you.
MBWorld Fanatic!
Joined: Apr 2023
Posts: 1,568
Likes: 590
From: Occupied Palestine
2025 Maserati Grecale Folgore and 2024 Jaguar F-PACE SVR
I remember a couple decades ago BP premium was clear like moonshine. That was worth paying extra for even if you couldnt use all the octane. Nowadays though it all comes from the same place and it's just the additive package that differs from brand to brand. I like Shell's.
Joined: Nov 2016
Posts: 7,847
Likes: 3,499
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I remember a couple decades ago BP premium was clear like moonshine. That was worth paying extra for even if you couldnt use all the octane. Nowadays though it all comes from the same place and it's just the additive package that differs from brand to brand. I like Shell's.
