Quote:
Originally Posted by p nut
You've got to understand that generally speaking, owners manuals say "use 87 octane", which really means use "regular". In most parts of the country, 87 is regular. However, places like CO, UT, etc. where we're at a much higher elevation, 85 is the norm. Every single vehicle I've owned has said to use 87 in the manual, but 85 is fine. I wish they'd just put in "use regular."
My parents have used 85 for as long as they've owned their MDX (premium recommended). Still runs great like it did on the day they bought it new, and it now has over 120k miles. 23 MPG on the highway.
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sooo...your suggesting that 85 octane is ok in an Si? I don't think so.If the put "use regular" gas in the manual or on the fuel door you would have that idiot that would think all gas is regular and that they should'nt use special gas.The MDX is'nt an Si and does'nt have an 11:1 static compression ratio much less the dynamic compression ratio of the K20 motor.