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For those moments of Brain dead, Is there a recommended product to add to the Gas Tank if one accidentally fills up their C8 with Regular 87 vs Super 93 or is any of the octane booster products from Auto parts stores ok?
For those moments of Brain dead, Is there a recommended product to add to the Gas Tank if one accidentally fills up their C8 with Regular 87 vs Super 93 or is any of the octane booster products from Auto parts stores ok?
Or just drive and don't be stupid next time?
Torco or Boostane can both increase the octane whole number by the user adjusting the concentrated amount. For example, .24 ounce of Boostane premium per one gallon of gas will increase 91 octane to 94 octane. Auto parts store octane boosters advertise increases of octane as points. One point of octane = .1 Octane. So, an octane booster that advertises 5 point octane increase is only .5 or half an octane number.
Unfortunately, Torco and Bosstane are not available in your local auto parts store.
I would drive very conservatively and add 93 octane at a half tank or less and you will be fine.
Last edited by Mike's LS3; Nov 4, 2020 at 03:39 PM.
From: Calgary, AB. There's a reason why white was the only color offered on every year Corvette. Proud Canadian German Jamaican!
St. Jude Donor '09, '12-'13-'14-'15-'16-'17
I'm pretty sure has thought about this and made it so it's not going to destroy the engine. Drive it normally and when it's at half a tank fill it up with 93, simple.
I'm pretty sure has thought about this and made it so it's not going to destroy the engine. Drive it normally and when it's at half a tank fill it up with 93, simple.
GM has thought of it. From the owner's manual, page 204:
If the octane is less than 91, the engine could be damaged and the repairs would not be covered by the vehicle warranty. If heavy knocking is heard when using gasoline rated at 93 octane, the engine needs service.
Drive it easily until you can add some 93 to the tank. Don't lug it, but don't rev it high of give it large amounts of throttle, either. If you hear the slightest bit of knocking or pinging, back off.
Some octane boosters are bad for catalytic converters. Before using one, I'd search Google for information about the specific product to confirm it's safe to use.
Last edited by Red Mist Rulz; Nov 4, 2020 at 03:36 PM.
I'm pretty sure has thought about this and made it so it's not going to destroy the engine. Drive it normally and when it's at half a tank fill it up with 93, simple.
The owner's manual say something different. Recommended Fuel Use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 93 — (R+M)/2. If unavailable, unleaded gasoline with a posted octane rating of 91 may be used, but with reduced performance and fuel economy. If the octane is less than 91, the engine could be damaged and the repairs would not be covered by the vehicle warranty. If heavy knocking is heard when using gasoline rated at 93 octane, the engine needs service. Do not use any fuel labeled E85 or FlexFuel. Do not use gasoline with ethanol levels greater than 15% by volume.
I would recommend driving gingerly and putting an octane booster in, and refueling with 93 at half a tank as others have recommended. If you drive easy, likely nothing will happen, the problem is forgetting when that Viper pulls up next to you
I called a racing friend in the meantime and he said as long as it is Lead free,... Torco is all of that. having added 9 gallons and probably used 0,8 driving back before I realized my mistake,
Per their chart, @ 9 gallons, every 2.88 ounces added increases octane by 1. @ 8 gallons, 2.56 = 1 octane increase, So I'll add 16 oz to bring it to 93 octane and be happy.
Thanks for the feedback..
Update the Label on the back of the product on Amazon says different ratios/efficacy. Still use 16oz., but it will raise it only 4 (87 => 91) ???
From: Calgary, AB. There's a reason why white was the only color offered on every year Corvette. Proud Canadian German Jamaican!
St. Jude Donor '09, '12-'13-'14-'15-'16-'17
Originally Posted by DSOMrulz
GM has thought of it. From the owner's manual, page 204:
Drive it easily until you can add some 93 to the tank. Don't lug it, but don't rev it high of give it large amounts of throttle, either. If you hear the slightest bit of knocking or pinging, back off.
Some octane boosters are bad for catalytic converters. Before using one, I'd search Google for information about the specific product to confirm it's safe to use.
Originally Posted by Racer X
The owner's manual say something different. Recommended Fuel Use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 93 — (R+M)/2. If unavailable, unleaded gasoline with a posted octane rating of 91 may be used, but with reduced performance and fuel economy. If the octane is less than 91, the engine could be damaged and the repairs would not be covered by the vehicle warranty. If heavy knocking is heard when using gasoline rated at 93 octane, the engine needs service. Do not use any fuel labeled E85 or FlexFuel. Do not use gasoline with ethanol levels greater than 15% by volume.
I would recommend driving gingerly and putting an octane booster in, and refueling with 93 at half a tank as others have recommended. If you drive easy, likely nothing will happen, the problem is forgetting when that Viper pulls up next to you
"could be damaged" an asteroid could hit Earth and we all could die.....I'm pretty certain that driving on 87 octane for half a tank isn't going to destroy the engine. I've put 87 in my C7 before and no problems whatsoever.
"could be damaged" an asteroid could hit Earth and we all could die.....I'm pretty certain that driving on 87 octane for half a tank isn't going to destroy the engine. I've put 87 in my C7 before and no problems whatsoever.
Your C7 recommended 93, the C8 requires 93 per the manual. It says not to use under 91 octane fuel. IIRC the base C7 even allowed for 87 for brief periods and lower performance. I said it was unlikely to be damaged it if driven lightly. The fact is GM has said if damage occurs it may not be covered under warranty. It really is that simple. Will you pay for his damage if it occurs?
Unheard of in Covid Realm nowadays, but Boostane called me after I called them with no answer. He was very helpful and found that the version (Premium) I should use came in a 16 oz size on amazon. He walked me through the mixing chart and I only need 11.52 Ounces to be added ( 1.28 x 9). Start @ 87 => 94 (to get to 94 - always up 1) 1.28 per gallon. This is why those companies that do not have or have shitty CS (customer service) loose sales and never know it. After talking to the rep, and not comfortable with the Torco discrepancies, so I purchased (ordered) the Boostane product and cnxed my Torco order on Amazon.
Thanks again to everyone that assisted.
A shame gas nozzles are not different sizes like gas & diesel.
I feel like such a DA after this. It's why flying different AC at the same time can cause problems. I have not used Premium regularly in many decades. Easier to remember normal vs NON-Ethanol (Bike, Lawn Equipment). I hope to not repeat this again!
Pretty much all of the reputable octane boosters are good. Boostane, torco, klotz, etc.
The problem is the MMT. Which coats your plugs orange. I ran it in my old 135i and while it ran amazing, changing the plugs once a year with only 2 bottles worth (during the summer) did coat the plugs orange, or like a dark orange almost brown color. I'm sure the cylinder walls were that color too.
If you use something like klotz which i believe doesn't contain MMT, has lead.
Then you have VP fuels unleaded octanium which as per the name, has no lead, but i believe has MMT.
I'm due for plugs on my car so i don't care about the lead, nor the MMT so i ran klotz during this past summer. I used up a whole gallon's worth. Car definitely felt different. Not placebo. AC on, 90+ degree weather and the car pulled like a freight train no problem.
Treating how many gallons and at what octane you're trying to achieve?
I don't think it will but these chemicals are pretty strong. Someone said they used only 1 bottle of boostane and it turned their plugs orange.
I'm purchasing the smaller 16 oz (not 32) bottle and after reconsideration probably only using 5oz to treat remaining 8.5 gallons (added 9 gallons to existing tank of 93 octane). 0.589 * 8.5 = 5 Oz.
The C8 Owners Manual says not to use fuels containing MMT.
Do not use fuels with any of the
following conditions; doing so
may damage the vehicle and void
its warranty:
. ..
. Fuel containing metals such
as methylcyclopentadienyl
manganese tricarbonyl
(MMT), which can damage
the emissions control
system and spark plugs.
Instead of trying to boost your octane level, how about syphoning out the low octane gas for use in another vehicle and then get the right gas in your C8?
The C8 Owners Manual says not to use fuels containing MMT.
Instead of trying to boost your octane level, how about syphoning out the low octane gas for use in another vehicle and then get the right gas in your C8?
Thanks. That was my first choice. I cnx all orders. I think I will go back to my gut and listen to you. I have an electric fuel pump so it won't be too bad.
I unfortunately live in California, will 91 octane damage the vehicle in anyway besides reduced power?
Premium 93 octane is recommended but not required.
Premium 91 octane is allowed but will provide reduced performance and economy (I'd really like to see a dyno test to see how much the performance is reduced - my guess is not much and might not even be measurable on the average dyno).
Lower than 91 octane isn't allowed.
There are a lot of areas where 93 octane isn't available. GM would have a real problem on their hands if they required 93 octane or else the engine could get damaged. I bet neither GM nor the EPA would like a bunch of people using octane boosters.
Per the manual: Recommended Fuel Use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 93 — (R+M)/2. If unavailable, unleaded gasoline with a posted octane rating of 91 may be used, but with reduced performance and fuel economy. If the octane is less than 91, the engine could be damaged and the repairs would not be covered by the vehicle warranty. If heavy knocking is heard when using gasoline rated at 93 octane, the engine needs service. Do not use any fuel labeled E85 or FlexFuel. Do not use gasoline with ethanol levels greater than 15% by volume.
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Boost Octane
Thanks again to everyone that assisted.
