08-12-2013, 08:20 AM | #3 |
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08-12-2013, 09:20 AM | #4 |
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Apparently you guys don't read the manual...
Recommended fuel quality BMW recommends AKI 91. Minimum fuel grade BMW recommends AKI 89. Minimum fuel grade Do not fill up with fuel below the specified minimum quality; otherwise, the engine may not run properly.◀ If you use gasoline with this minimum AKI Rating, the engine may produce knocking sounds when starting at high outside temperatures. This has no effect on the engine life. Minimum fuel grade The use of poor-quality fuels may result in harmful engine deposits or damage. Additionally, problems relating to drivability, starting and stalling, especially under certain environmental conditions such as high ambient temperature and high altitude, may occur. If drivability problems are encountered, we recommend switching to a high quality gasoline brand and a higher octane grade — AKI number — for a few tank fills. To avoid harmful engine deposits, it is highly recommended to purchase gasoline from BP or Top Tier retailers. Failure to comply with these recommendations may result in the need for unscheduled maintenance. To answer your question on the advantages... your MPG will be better and your engine performance will be at maximum when using 91 octane or higher. However, using 89 octane will be fine but you will lose MPG. |
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08-12-2013, 09:01 PM | #5 | |
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Thank you
I figured as much, just wanted to confirm. Quote:
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