wkdtime Posted March 15, 2005 Share Posted March 15, 2005 Just want to know if i can run my Supe (94 TT J Spec) on Normal unleaded petrol?, as i currently have no modifications, i.e stock boost! or will it effect the engine in terms of detonation? cheers guys! Quote Link to comment Share on other sites More sharing options...
D3xt3r Posted March 15, 2005 Share Posted March 15, 2005 Even thinking about should be a crime Japanese Fuel is 100RON so you should only fill Super Plus or Optimax in there... Quote Link to comment Share on other sites More sharing options...
wkdtime Posted March 15, 2005 Author Share Posted March 15, 2005 no more tesco visits for me then! Quote Link to comment Share on other sites More sharing options...
garetheves Posted March 15, 2005 Share Posted March 15, 2005 ive found the best to be Sainsburys Super Unleaded. No difference in performance compare to Optimax but get an extra 50 miles out of a full tank. Optimax is "estimated" 98 Ron, and Sainsburys SU is a guaranteed 97. Quote Link to comment Share on other sites More sharing options...
cashpoint Posted March 15, 2005 Share Posted March 15, 2005 Unless the car is setup for unleaded in which case you'll probably be fine Quote Link to comment Share on other sites More sharing options...
GlennMR2 Posted March 15, 2005 Share Posted March 15, 2005 i filled up for the first time the other day and put 63 litres of optimax in... would my car run diferantly if i put normal unleaded in Quote Link to comment Share on other sites More sharing options...
Steve W2 Posted March 15, 2005 Share Posted March 15, 2005 i filled up for the first time the other day and put 63 litres of optimax in... would my car run diferantly if i put normal unleaded in It would explode in a ball of flames.....okay, maybe not. But (unwanted) explosions would take place in your cylinder head at high boost, WOOT situations. Pre ignition of the air/fuel mixture before its expected isn't a good thing. Quote Link to comment Share on other sites More sharing options...
GlennMR2 Posted March 15, 2005 Share Posted March 15, 2005 ill stick with my optimax then.lol Quote Link to comment Share on other sites More sharing options...
Getrag Posted March 15, 2005 Share Posted March 15, 2005 ive found the best to be Sainsburys Super Unleaded. No difference in performance compare to Optimax but get an extra 50 miles out of a full tank. Just playing devils advocate but you have to wonder why that is? Also, anyone use octane boosters to get it up to nearer 100RON? Notice any performance difference? Quote Link to comment Share on other sites More sharing options...
DBR Posted March 15, 2005 Share Posted March 15, 2005 It would explode in a ball of flames.....okay, maybe not. But (unwanted) explosions would take place in your cylinder head at high boost, WOOT situations. Pre ignition of the air/fuel mixture before its expected isn't a good thing. ok?..im getting a bit confused here...ive used standard unleaded (is this the wrong thing to do?)...... ive got a uk spec, whats the best to use Quote Link to comment Share on other sites More sharing options...
Guest Ryan Posted March 15, 2005 Share Posted March 15, 2005 UK spec car cars are set up for 95 octane so normal unleaded should be fine.....works great on my UK TT. Quote Link to comment Share on other sites More sharing options...
tbourner Posted March 15, 2005 Share Posted March 15, 2005 Surely you'll still get problems with det though, especially if you're running higher boost. Quote Link to comment Share on other sites More sharing options...
Whitelightning Posted March 15, 2005 Share Posted March 15, 2005 I have used octane booster as first aid. When travelling in other countries it can be necessary if the fuel has no guaranteed RON. And believe me, when you are on vapours and filling up from a weird farmer's hillside pump (as we did on the Euro Cannonball-Run) its nice to know that at least you are adding some octane - even if HE is just filling your tanks with gash fuel where the "hi ends" have evaporated off. (There goes my filters rofl !) You wont need Octane booster in this country unless you are racing and even then I would rather use 'rated' race fuel. Quote Link to comment Share on other sites More sharing options...
blert596 Posted March 15, 2005 Share Posted March 15, 2005 So for my Jap NA is normal unleaded OK? Is it just the turbos that need the Optimax? Quote Link to comment Share on other sites More sharing options...
Tom Posted March 15, 2005 Share Posted March 15, 2005 Surely you'll still get problems with det though, especially if you're running higher boost. I wouldn't have said so on a UK car, optimax wasn't around 12 years ago..... Quote Link to comment Share on other sites More sharing options...
Tom Posted March 15, 2005 Share Posted March 15, 2005 So for my Jap NA is normal unleaded OK? Is it just the turbos that need the Optimax? I wouldn't recommend it but it won't do as much harm as on a tt Quote Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted March 15, 2005 Share Posted March 15, 2005 I wouldn't recommend it but it won't do as much harm as on a tt Im sorry mate, but i 110% disagree with this 2 yrs had car always run on normal tesco unleaded not one problem. Of course a ECU reset and optimax for meets Quote Link to comment Share on other sites More sharing options...
Tom Posted March 15, 2005 Share Posted March 15, 2005 I'm not sure what problems it would cause but changing from 100 to 95 ron will surely do something? Quote Link to comment Share on other sites More sharing options...
tbourner Posted March 15, 2005 Share Posted March 15, 2005 Gasoline is a complex mixture of hydrocarbons - paraffins, olefins, naphthenes, and aromatics. The combination of hydrocarbons and oxygenates determines its physical properties and engine performance characteristics. As different gasolines contain mainly hydrocarbons, the only significant difference between grades is the octane rating of the fuel. Octane ratings measure fuel properties: the ability of the unburnt end gases to spontaneously ignite under the specified test conditions. The spark ignition internal combustion engine's compression ratio had been inhibited by the unwanted "knock" that could rapidly destroy engines. "Knocking" describes the sound heard from an engine using fuel of too low octane. The higher the octane you can possibly afford to put in your car the better I'd say. Search Google for Research Octane Number and ALL the replies will say the higher the RON the less likely you are to get det. Quote Link to comment Share on other sites More sharing options...
CJ Posted March 15, 2005 Share Posted March 15, 2005 I wouldn't have said so on a UK car, optimax wasn't around 12 years ago..... Neither were boost controllers to run at 1.3 bar Quote Link to comment Share on other sites More sharing options...
Tom Posted March 15, 2005 Share Posted March 15, 2005 That's true, I was more on about stock, did anyone actually play about with upping the boost when they came out? Quote Link to comment Share on other sites More sharing options...
Thorin Posted March 15, 2005 Share Posted March 15, 2005 I wouldn't have said so on a UK car, optimax wasn't around 12 years ago..... No but super unleaded was. Don't have owners manual with me but doesn't it recommend Super unleaded? Quote Link to comment Share on other sites More sharing options...
Digsy Posted March 15, 2005 Share Posted March 15, 2005 I've run my NA on 95RON for three years with no problems. Quote Link to comment Share on other sites More sharing options...
Steve W2 Posted March 16, 2005 Share Posted March 16, 2005 Can I run an NA on normal unleaded - Yes Can I run a JDM TT on normal unleaded - No. The higher the octane the better really, a good SUL is fine. Can I run a UK TT on normal unleaded - Probably, they are mapped to run lower octane fuel. Although for the difference in price I would use SUL. Quote Link to comment Share on other sites More sharing options...
attilauk Posted March 16, 2005 Share Posted March 16, 2005 No but super unleaded was. Don't have owners manual with me but doesn't it recommend Super unleaded? the owners manual for a UK spec recomends 95 RON fuel. i always use at least SUL or Optimax if i can get it in mine. Quote Link to comment Share on other sites More sharing options...
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