Lebro Posted September 3, 2020 Report Share Posted September 3, 2020 ESSO premium, which is 97, & no ethanol where I live. Bob Quote Link to post Share on other sites
RobTR3 Posted September 3, 2020 Author Report Share Posted September 3, 2020 Esso Premium 97 and no Ethanol at my local garage with this grade. Rob Quote Link to post Share on other sites
RobH Posted September 3, 2020 Report Share Posted September 3, 2020 I have just invested in the book "Classic Engines, Modern Fuel" by Paul Ireland, and you might be surprised to find that of the fuels tested, super grade with ethanol was not a bad performer and that the ethanol gives benefits for combustion as it is an oxidiser. It was better than some fuels without ethanol. Beware of comparing octane across the pond. The US measures it using PON (pump octane number) whereas the UK and Europe use RON (research octane number). I guess Canada will align with the US. that means UK 98 RON is equivalent to US 93 PON. and UK 95 equates to US 91. Quote Link to post Share on other sites
David Owen Posted September 3, 2020 Report Share Posted September 3, 2020 1 minute ago, RobH said: I have just invested in the book "Classic Engines, Modern Fuel" by Paul Ireland, and you might be surprised to find that of the fuels tested, super grade with ethanol was not a bad performer and that the ethanol gives benefits for combustion as it is an oxidiser. It was better than some fuels without ethanol. Beware of comparing octane across the pond. The US measures it using PON (pump octane number) whereas the UK and Europe use RON (research octane number). I guess Canada will align with the US. that means UK 98 RON is equivalent to US 93 PON. and UK 95 equates to US 91. Thank you. You must be psychic. That was my next question. Equivalency. Quote Link to post Share on other sites
David Owen Posted September 3, 2020 Report Share Posted September 3, 2020 Still backfiring on down shifting and between shifts when accelerating. Quote Link to post Share on other sites
DavidBee Posted August 28, 2021 Report Share Posted August 28, 2021 On 9/3/2020 at 5:45 PM, David Owen said: Still backfiring on down shifting and between shifts when accelerating. That was a year ago. How did you resolve the backfiring prob Savid? What caused it? Surely the SU carburettors. Quote Link to post Share on other sites
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