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What to do if wife filled Boxster with 87 instead of Premium

Old 07-26-2007, 12:43 PM
  #16  
perfectlap
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I would siphon the gas out and an put it in your beater car, think I saw one of those siphons on my last trip to the evil Wal-Mart. Then fill the car with Chevron 93 if its localy available. My car is 7 years old now and it only saw anything south of 93 on one ocassion and that was maybe a gallon of the middle stuff.
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Old 07-26-2007, 02:19 PM
  #17  
Irishdriver
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Do nothing special - use the car as normal and be happy that Porsche had already considered this possibility.

The official line is that you can't expect full power from low grade fuel but the knock sensors will ensure nothing bad happens.
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Old 07-27-2007, 10:52 PM
  #18  
inactiveuser1228
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Your car is trashed, but I'll give ya a couple of bucks for it. Trust me, you'll be better off without it after its has such crap run through it.
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Old 08-08-2007, 12:21 PM
  #19  
gfl
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Default Why worry - you have a aknock sensor

It may run with less power, or hunt around, and have poorer economy, but no damage should come of it. Just drive it.

Yes, probably best to avoid very high rpm or heavy throttle uphill in case the sensor is slow.....

Grant
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Old 08-09-2007, 02:27 PM
  #20  
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Default Its linear. Mahy blend at the pump. 1/2 87 + 1/2 93 = 90

Yu can in fact "brew your own".

Additive packages often differ too, though.

Grant
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Old 08-11-2007, 06:58 PM
  #21  
PaulStewart
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When Porsche was testing the 996 turbo in the US, they drove it 100,000 miles on 87 octane and did not change the oil. Upon tear down the engine was fine. This was reported at a tech session at the Porsche Parade a few years ago by a factory rep.
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Old 03-07-2018, 05:26 PM
  #22  
Rafi Siddique
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Originally Posted by Lennart View Post
So my wife borrowed the Boxster and accidently filled up with regular (87 octane) gas instead of the recommended Premium (91 oct).

What is the impact to the engine from this? (never mind impact to marriage -look for us on Dr Phil next week..)

Does it require emptying the tank before driving, or will the pinging just be a nuisance and no damage done? Car only for highway driving (mostly flat).

Lennart
Your Boxster then must be an automatic transmission
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Old 03-07-2018, 05:38 PM
  #23  
Mike Mullins
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Default 89 Oct in Boxster

On second thought, Tell her she ruined it and need to get a new one, preferably one you have been craving since the week after you got the Boxster.....
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Old 03-07-2018, 05:45 PM
  #24  
Rafi Siddique
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Originally Posted by Mike Mullins View Post
On second thought, Tell her she ruined it and need to get a new one, preferably one you have been craving since the week after you got the Boxster.....
997S 911
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Old 03-07-2018, 05:48 PM
  #25  
Mike Mullins
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Talking Excellent,

though you'll miss handling
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Old 03-07-2018, 10:30 PM
  #26  
2RedPorsche
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Originally Posted by Rafi Siddique View Post
Your Boxster then must be an automatic transmission
why do you say that??
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Old 03-08-2018, 05:23 PM
  #27  
dr914
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I always use 87. Works fine, just retards the timing a bit so not as much power.
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