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'05 Octane Requirement - Click HERE for Original Thread
Pilot Rider
The 2005 Pilot Owner's Manual states that octane 91 or higher is required. From reading earlier posts it seems that this requirement and the engine oil requirement is wrong and Honda issued a correction. I've read that some folks called Honda customer service and they did know about the correction. My question is does anyone here have the correction (or an updated owner's manual) in writing that they can post?

Below is the copy of the current service information:
mmichel
Looking at your attachment, I just noticed that the oil capacity has gone from 5.2q to 4.5q. I noticed because I used this same page for reference when changing the oil in our 04 for the first time this past weekend. I can't see the "new" smaller oil filter being .7q smaller then the old filter. Actually I put in 5q with the new filter and the oil level was perfect.

Mike
adharris
I have just heard from Honda Canada that the same situation exists in Canada - the first 500 or so 2005 Pilots were shipped with incorrect manuals.

She told me that Honda Canada will be sending a letter to all affected owners in the next few weeks confirming that you can use gas with an octane rating of 86 or higher for normal use, but should use 91 octane for towing or at high altitudes.
Grey Pilot
I just brought home my new Pilot yesterday and was looking through the owner's manual. It does state that "octane number of 86 or higher" is to be used. 88 Kms on the odometer so far and just loving it.
cmurcray
Hi,

I just purchased my first Honda Pilot last week. It's a 2005 EX-L (sagebrush :)) and the octane requirement in the back of the manual definitely says 86, so I think the 91 is an error.

I have a question, though. In Colorado, our fuel choices for unleaded have octane levels of 85, 87 and 91. Does anyone know if using the 85 octane in any way harmful to the engine?

Colin
HenryBravo
quote:
Originally posted by cmurcray
Hi,

I just purchased my first Honda Pilot last week. It's a 2005 EX-L (sagebrush :)) and the octane requirement in the back of the manual definitely says 86, so I think the 91 is an error.

I have a question, though. In Colorado, our fuel choices for unleaded have octane levels of 85, 87 and 91. Does anyone know if using the 85 octane in any way harmful to the engine?

Colin


It's probably safe to run 85 octane (since the computer will retard the timing if it detects engine knocking) but you'll be losing a little bit of performance. Since the manual says to use 86, I would pay the few extra cents and just buy 87 octane.

HB
john802
quote:
Originally posted by cmurcray
...I have a question, though. In Colorado, our fuel choices for unleaded have octane levels of 85, 87 and 91. Does anyone know if using the 85 octane in any way harmful to the engine?

Colin



Using an 85 octane level at higher elevation is ok. At higher elevation, the air is thinner. In order for the air/fuel ratio to be maintained for proper compression, you only need a lower octane to get the proper air/fuel ratio.
cmurcray
quote:

Originally posted by John802
Using an 85 octane level at higher elevation is ok. At higher elevation, the air is thinner. In order for the air/fuel ratio to be maintained for proper compression, you only need a lower octane to get the proper air/fuel ratio.



I hadn't thought about the elevation. Makes sense.

Thanks! Colin
viventis
Here is the link to the specifications page for the 2005 Pilot on the Honda website. It specifies Unleaded Regular.

http://automobiles.honda.com/models...ModelName=Pilot

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