33 RPM Posted March 16 Share Posted March 16 Any advise , perhaps from 220 i owners or 330 owners which fuels Can be used and which Cannot conflicting answers from 3 sources appreciated, thanks. Link to comment Share on other sites More sharing options...
noobexpat Posted March 16 Share Posted March 16 Be careful ...lower octane means slower detonation. On interference engines thats a problem! 1 Link to comment Share on other sites More sharing options...
Mr Meeseeks Posted March 17 Share Posted March 17 I would suggest only 95 and above. Putting 91 in it will damage the engine. Can always go higher, but not lower. Link to comment Share on other sites More sharing options...
Photoguy21 Posted March 17 Share Posted March 17 Have you asked BMW? They can probably tell you. Link to comment Share on other sites More sharing options...
Ralf001 Posted March 17 Share Posted March 17 (edited) The fuel cap door... when open does it list any fuel types ? The owners manual...does it list any fuel types ? When you asked the dealership ....... ? Edited March 17 by Ralf001 Link to comment Share on other sites More sharing options...
33 RPM Posted March 17 Author Share Posted March 17 Thanks all, i am waiting for a sensible reply from BMW, ive read the fuel cap and asked 3 independent BMW dealers all with differing replies. hope to have clarity early next week are there any BMW owners, reading this, 220, 330 series owners ? what grade of petrol do you use.? Link to comment Share on other sites More sharing options...
Lacessit Posted March 17 Share Posted March 17 22 minutes ago, 33 RPM said: Thanks all, i am waiting for a sensible reply from BMW, ive read the fuel cap and asked 3 independent BMW dealers all with differing replies. hope to have clarity early next week are there any BMW owners, reading this, 220, 330 series owners ? what grade of petrol do you use.? I follow what the inside of the fuel flap says. That's what it is there for. Link to comment Share on other sites More sharing options...
HauptmannUK Posted March 17 Share Posted March 17 On 3/16/2024 at 11:19 AM, noobexpat said: Be careful ...lower octane means slower detonation. On interference engines thats a problem! No. 'Detonation' by definition means an explosive combustion ('knock') rather than a smoothly propagating flame front. So there is no such thing as 'slow detonation'. Lower octane fuels are more prone to detonation. Higher octane fuels have the unstable HC compounds refined out. Adding ethanol (E10/E20) increases the octane so Thai gasohol fuels actually have a real-world octane rating somewhat above their quoted RON. 1 1 Link to comment Share on other sites More sharing options...
HauptmannUK Posted March 17 Share Posted March 17 On 3/16/2024 at 10:00 AM, 33 RPM said: Any advise , perhaps from 220 i owners or 330 owners which fuels Can be used and which Cannot conflicting answers from 3 sources appreciated, thanks. BMW manufacture their engines in a variety of states of tune depending on the sales area, particular model variant and date of manufacture - hence you need to check in the supplied handbook and/or fuel flap sticker, as others have said. However all BMWs produced in the last 5 years or so will run perfectly well on 91RON. The engines are fitted with knock sensors which detect detonation and back off the ignition advance if its detected. Some models are fitted with wideband 02 sensors and Flex sensors and they would run a bit better on 95 under high load conditions. Link to comment Share on other sites More sharing options...
Dewey Posted March 19 Share Posted March 19 On 3/17/2024 at 8:52 PM, 33 RPM said: Thanks all, i am waiting for a sensible reply from BMW, ive read the fuel cap and asked 3 independent BMW dealers all with differing replies. hope to have clarity early next week are there any BMW owners, reading this, 220, 330 series owners ? what grade of petrol do you use.? I have 330e, I use 95 or higher if I can find. Link to comment Share on other sites More sharing options...
rimmae2 Posted March 24 Share Posted March 24 I have a 430i and use V Power 95. Link to comment Share on other sites More sharing options...
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