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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 11-09-2013, 02:43 PM
Gregzou Gregzou is offline
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accidentally fill with regular gas

my wife did it
what is the effect of the regular gas to the car?
thanks
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  #2  
Old 11-09-2013, 02:50 PM
skj69nyc skj69nyc is online now
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Go buy some octane booster and you should be ok. I think
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  #3  
Old 11-09-2013, 02:51 PM
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mpower997 mpower997 is offline
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Id just go get a some techron fuel additive and stick it in there with it. Ultimately you may notice negative fluxuation in mpg or performance but It wont hurt anything.
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  #4  
Old 11-09-2013, 03:45 PM
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Jay Arras Jay Arras is offline
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Quote:
Originally Posted by Gregzou View Post
my wife did it
what is the effect of the regular gas to the car?
thanks
You'll be fine. You may experience slower acceleration but it won't harm the car as a sometimes thing. No need for any additives. JUST DON'T LET IT HAPPEN AGAIN!
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  #5  
Old 11-09-2013, 03:47 PM
pcy pcy is offline
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Quote:
Originally Posted by Gregzou View Post
my wife did it
what is the effect of the regular gas to the car?
thanks
Nothing will happen.
You may notice slight difference under full throttle; other than that, you shouldn't notice any difference. We worry too much about our cars.
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  #6  
Old 11-09-2013, 03:58 PM
jayb328i jayb328i is offline
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No big problem. DO not push it when driving, slow acceleration. Perhaps at half a tank, fill it up with high. Be glad she did not fill it with diesel.
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  #7  
Old 11-09-2013, 04:17 PM
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Sumfuncomet Sumfuncomet is offline
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Do what Jay said, keep an eye on those pump jockeys.....or the mrs!......it will be fine.
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  #8  
Old 11-09-2013, 04:18 PM
Boland01 Boland01 is offline
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Mein Auto: 2010 535iX, 1996 328i
Too if it's like here were the octane is 93 and she accidently put in even haf a tank of 87 octane (9 gallons) you're still around 90 octane in your gas tank. One time is no big deal.
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  #9  
Old 11-09-2013, 06:59 PM
bimmerfan52 bimmerfan52 is offline
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Absolutely no worry. Remember, BMWs are sold all over the world, and at times owners may only have access to 87 octane gas.

If you had to you could run regular for weeks and not hurt the engine. The engine has knock sensors which will detect pre-ignition or detonation and modify the engine spark timing to protect the engine.

However, it will cause a loss of power and lower your gas mileage. Using low-octane gas is not something you want to do all the time, but an accidental tank now and then will not hurt the engine.

Drive conservatively without hard acceleration until the tank is gone and then give it the good stuff.

But don't tell the wife. Her nagging guilt could result in treatment fit for a king!
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  #10  
Old 11-11-2013, 12:33 PM
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Fahrer Fahrer is offline
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Don't worry. The computor will retard the ignigition and limit the boost. You may loose a lttle bit of power ans a slight bit of mpg. The computor is constatly pushing to maximize power and efficiency but will back off on the timing with any tank of gas......premium or regular.
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  #11  
Old 11-11-2013, 12:43 PM
H F H F is online now
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I would throw a bottle of Octain boost as someone mentioned above. Then filler up when you get to 1/2 tank . Then again when you hit half a tank a second time.
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Last edited by H F; 11-11-2013 at 12:45 PM.
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  #12  
Old 11-11-2013, 01:14 PM
svre46 svre46 is offline
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You will be fine. It will pull timing. A few of my buddies work for BMW. The local dealer only puts in regular when they fill them up. When it gets halfway or so go back to a nice quality premium grade fuel.
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  #13  
Old 11-11-2013, 01:27 PM
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pistolpuma pistolpuma is online now
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Quote:
Originally Posted by Gregzou View Post
my wife did it
what is the effect of the regular gas to the car?
thanks
You'll be fine. It doesn't hurt to occasionally run it on regular.
It could be worse. A friend of mine put diesel in his car. Now THAT was a problem.
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  #14  
Old 11-11-2013, 01:49 PM
jayb328i jayb328i is offline
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Time for a new car. Tell your wife that it is not drivable anymore because she used the wrong gas, and that is your excuse for a new BMW.
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  #15  
Old 11-11-2013, 02:01 PM
banglenot banglenot is offline
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Quote:
Originally Posted by jayb328i View Post
Time for a new car. Tell your wife that it is not drivable anymore because she used the wrong gas, and that is your excuse for a new BMW.

+1

Make sure you accompany it with



Then you can

a new
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Last edited by banglenot; 11-11-2013 at 02:02 PM.
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  #16  
Old 11-11-2013, 02:08 PM
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Kamdog Kamdog is offline
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Quote:
Originally Posted by Fahrer View Post
Don't worry. The computor will retard the ignigition and limit the boost. You may loose a lttle bit of power ans a slight bit of mpg. The computor is constatly pushing to maximize power and efficiency but will back off on the timing with any tank of gas......premium or regular.
OK, we should say, " the computer will use special ignition timing...."


Seriously, don't worry. Just put in high test at the next fill up, but shake your head a lot about it, and make a big deal about it with the wife ("I hope we don't throw a rod", works good), and maybe you can accrue some bonus points for you to use at your next screw up.
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  #17  
Old 11-11-2013, 11:35 PM
UltimateDriving UltimateDriving is offline
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I dont really think you will notice any difference at all. Just keep using your car as always and keep filling it with Premium.
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  #18  
Old 11-12-2013, 09:45 PM
e612007 e612007 is offline
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Mein Auto: 530xiT (e61)
accidentally fill with regular gas

Pretty much as everyone else has pointed out. No worries. It's even in the manual that it won't harm the engine.


Sent from BimmerApp mobile app
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  #19  
Old 11-14-2013, 10:52 PM
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2chill 2chill is offline
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After Sandy last year, I had no choice but to put in 87 octane as that was all the stations in NY sold for a couple of weeks. For the 1st tank I was able to find octane boost. For the second tank, all the stores were out of octane boost so I had to burn the full tank of 87 octane. The car still ran fine and I noticed very little difference in acceleration. As others said, don't worry about it and don't sweat the octane boost. Just fill up with premium at the half way mark and you'll be good.
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