Quote:
Originally Posted by padly1995
I use 100octane petrol. Is this enough?
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It MIGHT be.
Years ago in the USA the only octane # that was used is what is termed the
RESEARCH Method (to one derived in a lab) and we had premium grades ranging from 98 to 101. There was so much variation in the FIELD (at local gas / petrol stations) and the government was getting complaints. The government ordered everyone to use the same calculation methods for consumers knowledge.
That method is ((R+M)/2). Where R = Research and M = Field.
An interesting point about fuels (gas / petrol) before, all stations had 3 grades EXCEPT Sun Oil Company (Sunoco) which had a blending pump or dispenser and you could buy grades from 190 (sub regular) to 260 (super premium- 110 R). Sunoco still has this capability as they normally sell 4 grades with Ultra being their super premium.
Some stations have their Nascar racing fuel which I understand is around 120 per the new grading system. However the wholesale cost is in the $5 to $6 per gallon, while regular is under $2 per gallon retail.