putting 87 octane instead of the normal 91 octane.

[san-man]

O.K. guys I need your help, I myself have never mixed the two in my life. However, My wife was going to a friends house and says she had cruise control on her car (Audi A4). On the way there her check engine turns on and she decides to come home. All crying I check the code with my code reader and it says knock sensor. I thought that was a little odd. So, I ask my wife if she put anything other than premium (I know spelling). She says she put regular because it was cheaper and figured it would not hurt anything and now she is all crying.


My question is: Is it possible for the 87 octane not to hurt anything? Can I delute it with 92 octane and hope for the best? Or am I screwed here?

 

[SLVRBLT]

your truck will run like crap but youll be fine

 

[LIGHTNING LARRY]

Stay out of boost and add 91 or better when it hits about 1/2 tank.

 

[tallfreak]

Just tell her to drive it easy for a little while. I don't know anything about the Audis, but I am sure it will be fine to burn it as long as you don't drive it hard.

 

[Kryo-Genik]

if its in your truck stay the **** out of boost.
if its in her car tell her to keep her foot outta it.

and start filling up with premium as soon as you can

 

[blackmagicmach]

throw some octane booster just to stay safe and go easy on it...

 

[INFAMOU$]

throw some octane booster just to stay safe and go easy on it...

+1 best option.. it's honestly not going to hurt anything tho as long as you drive it easily.

 

[Kryo-Genik]

throw some octane booster just to stay safe and go easy on it...

that would require an insane amount booster to bring it up to a safe level

 

[runs2rch]

that would require an insane amount booster to bring it up to a safe level

Not as much as you think. A bottle of lucas into 5 gallons will raise 93 to 107. The Audi has maybe a 15 gallon tank so two botttles would be perfect.

 

[san-man]

Thank you everyone for all your help.


I really appreciated it, :thumbsup:

 

[Kryo-Genik]

Not as much as you think. A bottle of lucas into 5 gallons will raise 93 to 107. The Audi has maybe a 15 gallon tank so two botttles would be perfect.

that one id have to see.
everything ive seen thus far on the Lucas +3 octane booster or whatever they call it is only 3 octane numbers. so 87 would be 90.
93 to 107 is one big ****ing jump....

 

[fishingfox]

If you can find some Torco Unleaded Accelerator, follow the instructions and you're good to go.

 

[cah41]

All the suggestions above are fine.
Even if it was going to ruin it if you drove it, you're not screwed--just grab a hose and siphon out the gas, collect it, dump it. Better than ruining an engine.

 

[tallfreak]

All the suggestions above are fine.
Even if it was going to ruin it if you drove it, you're not screwed--just grab a hose and siphon out the gas, collect it, dump it. Better than ruining an engine.

That is a good suggestion, but most newer cars have a screen to keep people from siphoning gas. I don't know about her Audi, but... it is an Audi. They aren't exactly known for being behind the times.