Mike_Byron wrote:
Somebody something like "their car runs rich on what ever octane fuel"
I think you will find that the mixture setting doesn't change noticably between the various commercially available fuels. Its more a matter of the fact that some fuels are smokier than others and in some cases its batch to batch variation in the fuels themselves.
Gulgong is a small town which makes it easier to recognise a trend. About to years ago, my cars (commodore, tonner and the mini) all started to miss and foul plugs. I was starting to think about different plugs and spoke to my local mechanic. He just simply said "did you get your fuel at the xxxxxxx servo" ?
Yes, then he told me that he had dealt with a rash of cars with the same problem. All used fuel from that servo. The servo proprietors are straight shooters and don't play games with their fuels - it was straight from their suppliers.
Back in the old days we used to judge the state of tune by the colour of the spark plugs. You cant do that any more - they are always smokey black and that is because of the fuel not the tune.
Motorcycles are expecially very picky about their fuel as they run on a very fine edge. I've had this problem weekly at the moment, as the fuel station near to me and easyist isn't my favourite.
I find when I use it that the R1 engine stumbles more when cold and runs a little rougher. it might take an extra pump of the starter first thing to get her to kick.
The gulgong servo wouldn't use fuel derived from a Scallop shell would it?
cheers
