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Old Oct 25, 2022 | 08:05 PM
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Default Fuel and Fuel Additives

In the event there's no 91 octane fuel available and only 87, would it be ok to add the ACDelco fuel additive plus every time you do an oil change?
Most of the time it won't be an issue, but would this pose any problems running the additive just in case?
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Old Oct 25, 2022 | 10:09 PM
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Your warranty book says not to use additives in the oil just as an fyi.

You can likely get away with bg44k (what the dealerships use) or just techron every once in awhile in the fuel tank (less expensive but same ingredients as the AC Delco fuel system treatment plus)..

DO NOT use octane boosters. All the ones that work will leave permanent orange residue on the piston tops, cats, plugs, o2 sensors which will be an easy target for warranty denial.



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Old Oct 25, 2022 | 10:23 PM
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Thanks. Might just be best if I absolutely have to run something like 87 if there's no alternative, then just fill it up at first chance with the premium
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Old Oct 26, 2022 | 01:41 PM
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Originally Posted by trav15
Thanks. Might just be best if I absolutely have to run something like 87 if there's no alternative, then just fill it up at first chance with the premium
Put in as little of the 87 as you'll need to get somewhere with better supplies, and fill up with the good stuff as soon as you can.
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Old Oct 26, 2022 | 03:26 PM
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Originally Posted by trav15
In the event there's no 91 octane fuel available and only 87, would it be ok to add the ACDelco fuel additive plus every time you do an oil change?
Most of the time it won't be an issue, but would this pose any problems running the additive just in case?
A fuel additive won't replace the lack of higher octane fuel. Its just a fuel cleaner.

Originally Posted by bhvrdr
Your warranty book says not to use additives in the oil just as an fyi.

You can likely get away with bg44k (what the dealerships use) or just techron every once in awhile in the fuel tank (less expensive but same ingredients as the AC Delco fuel system treatment plus)..

DO NOT use octane boosters. All the ones that work will leave permanent orange residue on the piston tops, cats, plugs, o2 sensors which will be an easy target for warranty denial.
OP isn't looking at an oil additive, he's asking about running AC Delco fuel additive at each oil change which is likely the AC Delco Fuel System Treatment Plus. Which is a fuel additive, not an oil additive. BG 44K isn't a GM recommended product.
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Old Oct 26, 2022 | 03:37 PM
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Originally Posted by Newdude
A fuel additive won't replace the lack of higher octane fuel. Its just a fuel cleaner.



OP isn't looking at an oil additive, he's asking about running AC Delco fuel additive at each oil change which is likely the AC Delco Fuel System Treatment Plus. Which is a fuel additive, not an oil additive. BG 44K isn't a GM recommended product.
Yup thats why i addressed fuel additives in my post. Bg44k is used by several gm dealerships. AC Delco fuel system treatment is the same as the techron treatment you can buy cheaper. Either are fine if you had to use 87 octane REGULARLY and were worried about the decreased concentration of cleaners in 87 octane but if its only a tank in emergencies you wouldn't need any of them.
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Old Oct 27, 2022 | 06:06 PM
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Originally Posted by trav15
In the event there's no 91 octane fuel available and only 87, would it be ok to add the ACDelco fuel additive plus every time you do an oil change?
Most of the time it won't be an issue, but would this pose any problems running the additive just in case?
I believe that fuel with a top tier rating, which is recommended by the manual, will have a satisfactory additive package irrespective of octane rating. Top Tier is available in in 87 Octane fuel. I agree with others that recommend not using an octane booster. I won't add anything to my fuel.



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Old Oct 28, 2022 | 10:58 PM
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Depending where you're located, E85 is an excellent octane booster and is perfectly safe to add 1-2 gallons to 87-91 octane in order to increase your effective octane rating closer to or above 93.

In Iowa (OP's location), my typical fuel of choice is 93-octane from Kum & Go.

www.Find93.com
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Old Oct 28, 2022 | 11:05 PM
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Originally Posted by Andybump
I believe that fuel with a top tier rating, which is recommended by the manual, will have a satisfactory additive package irrespective of octane rating. Top Tier is available in in 87 Octane fuel. I agree with others that recommend not using an octane booster. I won't add anything to my fuel.
TopTier is in regards to detergent levels and has nothing to do with octane or knock quench of a fuel. Ideally, you run a TopTier 93, but if it comes down to one or the other, most any 91 or 93 is superior to a TopTier 87. If typically running a non-TT fuel, simply add a bottle of Chevron Techron fuel system cleaner prior to every oil change.

Happy to have further in-depth fuel discussions with anyone if they need additional assistance as this is my area of expertise/profession.
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Old Oct 28, 2022 | 11:19 PM
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Originally Posted by Kracka
TopTier is in regards to detergent levels and has nothing to do with octane or knock quench of a fuel. Ideally, you run a TopTier 93, but if it comes down to one or the other, most any 91 or 93 is superior to a TopTier 87. If typically running a non-TT fuel, simply add a bottle of Chevron Techron fuel system cleaner prior to every oil change.

Happy to have further in-depth fuel discussions with anyone if they need additional assistance as this is my area of expertise/profession.
True. But OPs question was "In the event there's no 91 octane fuel available and only 87, would it be ok to add the ACDelco fuel additive plus every time you do an oil change?". The "every oil change" suggests his concern was the detergent additives in the fuel - many think that lower octane fuels do not contain as much of that. I was pointing out that if the 87 octane is top tier fuel, it will contain the necessary additives, making it unnecessary to add anything to the fuel for that purpose. I never said top tier had anything to do with octane rating - in fact the photo I posted shows that its available in different octanes.

Last edited by Andybump; Oct 29, 2022 at 07:57 AM.
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Old Nov 18, 2022 | 05:17 PM
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Originally Posted by bhvrdr
Your warranty book says not to use additives in the oil just as an fyi.

You can likely get away with bg44k (what the dealerships use) or just techron every once in awhile in the fuel tank (less expensive but same ingredients as the AC Delco fuel system treatment plus)..

DO NOT use octane boosters. All the ones that work will leave permanent orange residue on the piston tops, cats, plugs, o2 sensors which will be an easy target for warranty denial.
I have had Sta bil leave a pink coloration on plugs.
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Old Nov 19, 2022 | 02:39 AM
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check this stuff out that I have been using for at least 20 years….

website
https://www.liquidhorsepower.com



Last edited by magls2; Nov 19, 2022 at 03:00 AM. Reason: Deleted Facebook reference
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