Negita43 Posted November 5, 2023 Share Posted November 5, 2023 I have a very old but in very good condition Altis 1.6. It runs on 95 petrol - anyone have experience of running one on more modern octane ratings - is there an upgrade? Link to comment Share on other sites More sharing options...
VocalNeal Posted November 5, 2023 Share Posted November 5, 2023 The manual says RON 91 or higher 🤔 Link to comment Share on other sites More sharing options...
Negita43 Posted November 5, 2023 Author Share Posted November 5, 2023 Thanks VocalNeal - but is E10 higher (I have no idea about all these gradings) Link to comment Share on other sites More sharing options...
VocalNeal Posted November 5, 2023 Share Posted November 5, 2023 No. The octane rating is displayed on the pump. The ethanol content is a separate issue. "std" fuel here is E10 or 10% Ethanol but still the octane rating on the pump. Ethanol is cheaper so E20 is cheaper than E10 but ethanol has less energy density so you get less energy per litre so you use more. So higher Ethanol content needs more fuel sprayed into the engine. Unless your vehicle has E20 written somewhere you will run a leaner mixture using E20. The yellow pump will say Benzene. That has no ethanol but is about 10B per litre more expensive. It is still 95 octane. Where I live only one PT station has that. 1 Link to comment Share on other sites More sharing options...
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