Is it normal?
- Thread starter DHK
- Start date
I had a similar issue it started so rough one morning it threw a CEL. I was using BP, Speedway or any place with gas and I switched to Shell 93 octane ultimate only and it starts smooth every time now. I was really surprised what a huge difference it made. Not sure if your issue is the same but if you are not using Shell give it a try.
Hate to start a war here but I always use Arco (cheapest) gas in our area. Have done so for YEARS !! In WA, Arco has 87, 89 and 92 octane. Typically, I put in the 92 unless some guy in a Miata is using the pump. The glare I get from him while dropping down to the 89 !! To fan the fire, I go from full until empty EVERY TIME !!
And, since we're on the subject, why stop now so ask: how far has anyone gone when you have 0 miles showing on the 'to empty' reading before filling back up ??
And, since we're on the subject, why stop now so ask: how far has anyone gone when you have 0 miles showing on the 'to empty' reading before filling back up ??
i got to my read out display reading this ---- i then develped an eml light on the dash independent dealer diagnosed the two faults as mis fire on cylinder four and low petrol level he put the car on another machine to check the firing no fault found he concluded that the very low fuel level dragged some dirt up on start up ive never let it go low since and the car is perfect now always ran on 98 octane
tedster said:
According to the Euro owners manual IRC, it says that 98 octane should always be used to get the best out of the engine. Though it also says 95 can used if need be.
Here i found this. http://en.wikipedia.org/wiki/Octane_rating
"In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in the United States, Canada and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 8 to 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in the US and Canada, would be 91-92 in Europe. However most European pumps deliver 95 (RON) as "regular", equivalent to 90-91 US (R+M)/2, and even deliver 98 (RON) or 100 (RON)."
Now I feel so much better!
"In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in the United States, Canada and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 8 to 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in the US and Canada, would be 91-92 in Europe. However most European pumps deliver 95 (RON) as "regular", equivalent to 90-91 US (R+M)/2, and even deliver 98 (RON) or 100 (RON)."
Now I feel so much better!
Wait, don't feel so much better yet, lets put two and two together:DHK said:Now I feel so much better!
no fit state said:
DHK said:
So, from these two statement one could draw a conclusion that 91 (US-style) is ~95 (EU-style), and thus can be used only 'if need be', apparently sending us looking for 93 (US-style)... Now I am more confused than ever
Shipkiller
Veteran
Here in the Tidewater area, most of the pumps have 93 octane.
troggs said:Wait, don't feel so much better yet, lets put two and two together:DHK said:Now I feel so much better!
no fit state said:
DHK said:
So, from these two statement one could draw a conclusion that 91 (US-style) is ~95 (EU-style), and thus can be used only 'if need be', apparently sending us looking for 93 (US-style)... Now I am more confused than ever
Great! :scratchhead:
Maybeeee, just maybe, the Euro owners manual made a mistake
And, and, maybe 91(US) is good enough
takedown8 said:
Which is the equivalent of 95 ron over here, if I've understood things correctly? Which would follow what my owners handbook says.
I'll always be sticking 98 ron in mine though and when I come across it, 99 ron will be going in too
Good shout, it runs far better on 98/99no fit state said:takedown8 said:...I'll always be sticking 98 ron in mine though and when I come across it, 99 ron will be going in too