Quantum 5th Gear March 3, 2014 Share March 3, 2014 Understand Direct fuel injection (DFI) engine requests higher petrol grade, can advis what grade is suitable? Heard most Jap automakers output models w/o (DFI) due to most countries fuel grade is not suitable for DFI engine, include Singapore? ↡ Advertisement Link to post Share on other sites More sharing options...
Colin03 4th Gear March 3, 2014 Share March 3, 2014 Hi , you can always check your min grade acceptable for your car at the fuel intake or the car manual or web. Rdgs Link to post Share on other sites More sharing options...
Vega Turbocharged March 3, 2014 Share March 3, 2014 unless its tuned, I think it can take 95. best is check the fuel cap for the min req rating. Link to post Share on other sites More sharing options...
Quantum 5th Gear March 3, 2014 Author Share March 3, 2014 unless its tuned, I think it can take 95. best is check the fuel cap for the min req rating. is Singapore 95 equivalent Jap/Euro 95? a lot countries labelling 95, but quality doesn't meet 95 standard, this why Japanese outout model engine is different from JDM Link to post Share on other sites More sharing options...
Vega Turbocharged March 3, 2014 Share March 3, 2014 is Singapore 95 equivalent Jap/Euro 95? a lot countries labelling 95, but quality doesn't meet 95 standard, this why Japanese outout model engine is different from JDM not sure about Japanese engines but I know conti DFI can take local 95. Link to post Share on other sites More sharing options...
ER-3682 Twincharged March 3, 2014 Share March 3, 2014 Put 98 the best,for example Mazda latest Skyactiv engine,those cars exported to S'pore have 13:1 compression,the cars selling in Japan & Europe using 14:1 compression..maybe due to weather or petrol issue. Link to post Share on other sites More sharing options...
Sc400 Neutral Newbie March 10, 2014 Share March 10, 2014 Any Petrol with RON 95 in Singapore is enough. If you pump in malaysia, its at your own risk. Link to post Share on other sites More sharing options...
Quantum 5th Gear March 10, 2014 Author Share March 10, 2014 Put 98 the best,for example Mazda latest Skyactiv engine,those cars exported to S'pore have 13:1 compression,the cars selling in Japan & Europe using 14:1 compression..maybe due to weather or petrol issue. is engine compression rate directly proportional to petrol grade? in term of higher compression rate needs higher petrol grade, Link to post Share on other sites More sharing options...
ER-3682 Twincharged March 10, 2014 Share March 10, 2014 is engine compression rate directly proportional to petrol grade? in term of higher compression rate needs higher petrol grade, Yes,the higher the compression,the higher the octane will be better....Mazda latest engine can use 95 petrol,but not the full performance. Link to post Share on other sites More sharing options...
Helloworld99 1st Gear March 10, 2014 Share March 10, 2014 Any Petrol with RON 95 in Singapore is enough. If you pump in malaysia, its at your own risk. Can Japanese car take 92 petrol? I driving a 2007 Nissan March Link to post Share on other sites More sharing options...
ER-3682 Twincharged March 10, 2014 Share March 10, 2014 Can Japanese car take 92 petrol? I driving a 2007 Nissan March No problem. Link to post Share on other sites More sharing options...
Furrynadz 5th Gear March 11, 2014 Share March 11, 2014 Understand Direct fuel injection (DFI) engine requests higher petrol grade, can advis what grade is suitable? Heard most Jap automakers output models w/o (DFI) due to most countries fuel grade is not suitable for DFI engine, include Singapore? depend wat it write 98 with power loss if run 95 = use 98 min 95 = use 98 min 92 = almost impossible to see on DFI cars so...98 1 Link to post Share on other sites More sharing options...
Spring Moderator March 11, 2014 Share March 11, 2014 From what I understand before, the direct injection engines work best on petrol with high sulphur content. S'pore petrol does not have high sulphur content so we will never be able to maximise a direct injection engine irregardless of teh octane of petrol used. 3 Link to post Share on other sites More sharing options...
Jamomatt 2nd Gear March 11, 2014 Share March 11, 2014 Malaysian petrol are no worse than Singapore fuel. Try getting a tuner to tune on both. Both suck. Link to post Share on other sites More sharing options...
ER-3682 Twincharged March 11, 2014 Share March 11, 2014 From what I understand before, the direct injection engines work best on petrol with high sulphur content. S'pore petrol does not have high sulphur content so we will never be able to maximise a direct injection engine irregardless of teh octane of petrol used. Just the Opposite,direct injection engine NEEDS low sulphur contents petrol....First time Mitisubitshi bring in the "GDI" engine,cause so much problem,mostly cause by carbon deposit near the injectors & intake system.. 1 Link to post Share on other sites More sharing options...
LoverofCar 6th Gear March 12, 2014 Share March 12, 2014 depend wat it write 98 with power loss if run 95 = use 98 min 95 = use 98 min 92 = almost impossible to see on DFI cars so...98 Does Octane level = power? I was thinking it will cause knocking in the engine only... Link to post Share on other sites More sharing options...
ER-3682 Twincharged March 12, 2014 Share March 12, 2014 Does Octane level = power? I was thinking it will cause knocking in the engine only... Dyno show Octane does not up the power in N/A cars,but on high performance Turbocharged cars,yes..power is better...anyway,i always think 98 petrol got extra additives to keep engine running smoother. Link to post Share on other sites More sharing options...
Spring Moderator March 13, 2014 Share March 13, 2014 Just the Opposite,direct injection engine NEEDS low sulphur contents petrol....First time Mitisubitshi bring in the "GDI" engine,cause so much problem,mostly cause by carbon deposit near the injectors & intake system.. Apologies on this, could have got it mixed up. Point I was trying to make is that the sulphur content in our petrol be it low or high is not ideal for direct injection engines so we will not be able to maximise the capabilities of the engine and thus octane is quite irrelevant in this aspect. I know this at first hand cos I owned a Lancer GDI before and I never got the best out of it and worse still my petrol consumption was worse than the Lancer MPI version!! ↡ Advertisement 3 Link to post Share on other sites More sharing options...
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