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premium or normal unleaded?

harumomo
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Blade Experienced

Blade

Posted
Posted

The price diff is an extra 16cents max

If you fill 40 litres its only $6.40 extra over the normal stuff...

Surely u can afford that little bit extra? I mean its better spending that little bit more knowing ur getting 98ron and using the best stuff for you pride and joy

32ANA Collaborator

32ANA

Posted
Posted

yeah it all depends on how u drive it. if u race a bit and r a bit heavy footed with it then use the premium, but if ur a granny driver and dont flog it everyday then the regular should be ok. my mates uses regular in his GTR and has never had any probs with it, and i mostly use regular and its fine.

druzilla32 Mentor

druzilla32

Posted
Posted

i remember needing petrol on a cruise and the only place was a "Mobil" station. It was very oldschool. i think the mix was like 60% petrol 30% water & 10% dirt. I couldnt hit boost without hearing the misfirring. I wouldnt get any less then premium again

RedStreakZ Contributor

RedStreakZ

Posted
Posted

I hear what you're saying Harumomo....It's beginning to hurt my pocket too, since I drive long distances to and from work...add with traffic jams...

Anyway, i'm thinking of going down the 3/4 route...ie, 3 weeks regular, 1 week premium. I've used regular on occasions( "hears the boooing in the background")..ALTHOUGH so far I've been filling up with mostly premium. I haven't had any misfiring or detonation effect (maybe i'm not sure what that would sound like) when using regular. The only difference is that using regular, you will soon notice a lacking in the acceleration...I don't think there is much difference in the fuel economy between the two an extra 20 ks perhaps..not much (maybe I need my car need tuning??) *shrugs*

my 2 cents

JimX Grand Master

JimX

Posted
Posted

The (factory) ECU should retard the timing to a certain extent if you want to use regular fuel. But it does have its limits, and you can get inaudible pinging which will be damaging to your engine. If you want to run regular, get one of those Jaycar knock sensor readout kits. Run it on premium and keep track of the knock levels. Then swap to regular and if it gets any worse, retard your timing via the CAS by a couple of degrees.

Personally I don't see much benefit in running regular unless you do a lot of highway driving where it's running really lean. Your power and therefore economy will suffer and you're saving a lot less than the 7-9cpl extra it costs you to run premium. If you fill up with 50 litres once a week, that costs around an extra $200 a year to use premium for the same amount of fuel. But because your mileage is better on premium, it's probably closer to only $100 extra. As for me who fills up once a fortnight, that's only $50 extra per year. Why would I bother using shit fuel when I can get better, ethanol-free stuff for only $50 extra a year?

ferni Grand Master

ferni

Posted
Posted

As for the NA skyline - your fine to run normal unleaded, your not shoving 15 pounds of pressured air into your engine, with fuel to match, its not going to detonate before the spark goes off.

Would be wasting your money on premium

Zagan Collaborator

Zagan

Posted
Posted

Premium fuel only in Skylines unless you have an R32 where you might be able to get away with it as it seems some need it but others don't.

Also if you run regular fuel in a premium fuel only car you can send the knock sensor out of wack, requiring you to get a new knock sensor and can really F the engine and computer right up, can also F seals and stuff.

This is what happens to WRX if you ever run regular fuel in them, R33 and R34 cars are premium only cars.

Shame they don't have JAp fuel here their normal stuff is 100% ron and their good stuff is 110%ron.

So even running premium fuel here would be like runing regular fuel over there only that it's even crappier.

Though not worth the risk... unless you can afford the damage from it.

vanix Contributor

vanix

Posted
Posted

That being said are all premium fuels the same?

I fill up each time at various petrol stations from 7/11's to Mobil etc. Are there any 'best' premium fuels to use? For my r32gtst.

I'd like to know what the best fuel option is that i can use.

Thanks :rofl:

JimX Grand Master

JimX

Posted
Posted
That being said are all premium fuels the same?

I fill up each time at various petrol stations from 7/11's to Mobil etc. Are there any 'best' premium fuels to use? For my r32gtst.

I'd like to know what the best fuel option is that i can use.

Thanks :)

Man, how many times has this been asked? Do a search for all the arguments as to which is best, but here is a very quick overview.

Shell Optimax, Mobil Synergy 8000, and BP Ultimate are all 98 RON.

Caltex and Ampol Vortex Gold are 96 RON.

All other premiums are usually 95 RON, though sometimes they are 96 RON (it will say on the pump if it's 96).

You should try all of them to see which gets you best value for money. I used to run 98 RON fuel on both my car and bike, but the bike runs too rich and not enough timing to take advantage of the 98 RON fuels, and I get the same or slightly better economy and power from normal premium or Vortex. Once I can afford a tune I'll tune it to run on 98 RON fuel. But the Skyline only likes 98 RON fuel and that's all I use (any of the first three, whichever is cheapest/most convenient at the time).

LTSJayce Veteran

LTSJayce

Posted
Posted
in view of today's petrol prices, my pocket is starting to hurt a little, making me consider dispensing with the premium highhorse.

does pumping normal unleaded petrol screw your car up or is it ok?does it hurt future salability?

Hmmmm...now,let's see:it may cost you a few extra dollars a week to keep your ride running smoothly and efficiently,as the maker intended OR be tight and possibly cost yourself a full engine rebuild/engine swap.Even if it's NOT your pride and joy,don't take the short route!If it costs,as a guesstimate,between 2 and 5 grand to do said engine out 'cause you were scrimping on your fuel,buy a second car you don't need to run good juice in!!!I know my GTR would pitch both of us over a cliff if I took shortcuts...

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