Quote:
Originally Posted by mav1178
To answer your question: both. I never said it's okay to use 87 all the time.
You could use 87 all the time, but you risk damaging your engine in the long run.
The ECU can compensate for short periods of lower octane. There would be no harm done unless you run with 87 for extended periods of time and/or put the engine under load/temps/stresses where detonation (ping) is an issue even with normal 91 octane gas.
My point is, just because you've put 87 octane in the car doesn't mean you are harming the engine. Much like putting on a spare tire after getting a flat, you can drive around quite a bit with 87 octane as long as you use some care in driving the car.
People flip out when a dealership puts in the wrong gas. Yes, they were probably wrong, but if you run a business at some point you would find ways of reducing costs without negatively impacting overall sales. This is one of those ways, especially if it's a low-end car that takes premium gas that may see a lot of test drives.
-alex
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ok we're on the same page in regards to 87 being ok to use once in a while but not for use over the life time. All I'm saying though is that from what I read OP is a little distressed over 87 being in the car, if we all said "don't worry man its all good if they put 87 in your car" then I'm sure new people reading would be under the impression that its ok to put 87 in all the time :P that's all i'm saying, its just a change in perspective I was bringing up