B16A1 - Which Fuel? 95/98?

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Originally Posted by gumus89

My god, what is wrong with you people? Give me a good reason to use 98 over 95?

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The price difference is like 4-5cents. You already jumped 15 cents from 91, there's only a few dollar difference per tank between 95 & 98, and it'll cost you more than the price difference to try and lift that octane ratingwiyth addictives.

Also, some 95 is just plain bad fuel where I am (QLD), iirc Shell it's refined overseas and shipped here and boosted back to 95/98 using octane boosters, so sometimes their 98 feels like 95 and their 95 feels like 93 (in my euro)

Furthermore, most higher octane fuel contains cleaning agents and other addictives. Vortex 98 has almost the same level of addictive as BP Ultimate 98 (they're all refined from the same place I think). the Only 95 octane I know that contains an cleaning/addictive package is Vortex 95.

so the 4-5cent not just get you higher octane fuel but also cleaning/addictive agents.

bp ultimate done :D

To all you people asking why you would bother to use 95 or 98, go ahead just use 91, and if you can make sure it's from an independent little no-name store where the toilet probably flushes into their petrol storage.

95 minimum if you car is worth caring for. 98 for those of you who know why it's the best option (modern/tuned/JDM etc).

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Originally Posted by gumus89

Well I have a h22 so its 95 minimum recommended. What about the b16a?
If it uses 91 then wtf guys, 98?

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Soo u would only use the recommended fuel and refuse to use something better for your car?

Hey dude - I'd suggest use 98 (I do in my b16a2) more for the anti-knocking properties of the higher octane rating than anything else.
Knocking is when you get combustion happening slightly before TDC (top dead centre) of the piston stroke and it can kill engines. Low risk of occurence between 95 and 98. The turbo guys have more to worry about than NA guys usually due to the intake temps they experience.

You won't get much gains but you can tune your engine (advance the timing a few degrees) to take advantage of this and get more power (or shift it around in the rev range). I've read that E85 has better anti-knocking than 98 octane too - but never tested it personally as it's not for sale in SA.

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Originally Posted by Fredoops

The price difference is like 4-5cents. You already jumped 15 cents from 91, there's only a few dollar difference per tank between 95 & 98, and it'll cost you more than the price difference to try and lift that octane ratingwiyth addictives.

Also, some 95 is just plain bad fuel where I am (QLD), iirc Shell it's refined overseas and shipped here and boosted back to 95/98 using octane boosters, so sometimes their 98 feels like 95 and their 95 feels like 93 (in my euro)

Furthermore, most higher octane fuel contains cleaning agents and other addictives. Vortex 98 has almost the same level of addictive as BP Ultimate 98 (they're all refined from the same place I think). the Only 95 octane I know that contains an cleaning/addictive package is Vortex 95.

so the 4-5cent not just get you higher octane fuel but also cleaning/addictive agents.

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I get Vortex 95 and there is absolutely zero reason to use 98. 98 RON petrol has NO extra energy per litre, which is essentially the only thing that will increase power in an engine that can not utilise the extra knock resistance

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Originally Posted by Frosty-Civic

Soo u would only use the recommended fuel and refuse to use something better for your car?

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What I said above, and the fact that 98 fuel is not "better" than 95. Its got higher knock resistance and sometimes has extra "detergents". I use Vortex 95 which is meant to have the same detergents in them anyway. There is nothing better about 98 for my engine. If you dont know what the differences between fuels are then there is no point posting.

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Originally Posted by VicTiR

Hey dude - I'd suggest use 98 (I do in my b16a2) more for the anti-knocking properties of the higher octane rating than anything else.
Knocking is when you get combustion happening slightly before TDC (top dead centre) of the piston stroke and it can kill engines. Low risk of occurence between 95 and 98. The turbo guys have more to worry about than NA guys usually due to the intake temps they experience.

You won't get much gains but you can tune your engine (advance the timing a few degrees) to take advantage of this and get more power (or shift it around in the rev range). I've read that E85 has better anti-knocking than 98 octane too - but never tested it personally as it's not for sale in SA.

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98 does have the extra knock resistance than 95 but it is way over the top. Even 95 will have more than sufficient knock resistance for the engine. Whatever is recommended is always conservative anyway. You would be unlikely to see any knock even if you used under the recommended. And even then, if you were forced to use lower, all you would have to do it not put the engine under heavy load (i.e. dont gun it and you would be completely fine).

GUYS THERE A PEDDIE STATION THAT SELLS 100 OCTANE!!

*jizz*



newayz, yeah 95 so crap. dont even bother.. i tried that stuff.. its lyk tryna gym afta eatin a pounder (four quarter pounder patties).
you car wont like it, and most certainly you. you'll find yourself havin yer foot down wid nex to no response at all.

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Originally Posted by Jaiiiwon

GUYS THERE A PEDDIE STATION THAT SELLS 100 OCTANE!!

*jizz*



newayz, yeah 95 so crap. dont even bother.. i tried that stuff.. its lyk tryna gym afta eatin a pounder (four quarter pounder patties).
you car wont like it, and most certainly you. you'll find yourself havin yer foot down wid nex to no response at all.

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Shut up.

LOL.. settle down you grump.

its a forum.. meaning anyone and everyone have their opinion put out there.

hey, if you think 95 is sufficient.. by all means use 95. but you dont have to be a dick about it.
the guy askes question.. did he direct it specifically at you?. no didnt think so.

Yeah its a forum, but no need to talk like a bogan.
Forums are full of anecdotal crap and thats nothing to be proud of. Every opinion should at least be justified with some real evidence.
There are so many variables when driving that its almost impossible outside of a chemistry lab to determine whether one octane fuel will be better than another.
My car feels very different day to day with different weather and I use different amounts of fuel from week to week depending on if my travel into town is busier or not.
Not to mention that 95 or 98 from one shop and another will most probably be very different as well. Even from the same place two weeks in a row may have quite different chemical composition.

yeah well have a look at your info. It says MEMBER. act like one. Dont be all top dog bull crap on me, acting all moderator and watnot.

People can have their say, it all comes down to the disgretion of the person who asked the question, to either take the advice or not.

Evidence? It simple Mr. Grump. If 95 octane causes you to have your foot down on full throttle, climbing up revs, etc. that there means you're using more fuel.
Now in saying that, you wouldn't have that problem if you run 98, as it's more responsive. You wouldn't have to rev it high. you wouldn't have to floor it up a high to get some considerable speed.

Now since the fuel tank is a consistant variable.. you can therefore say that you'd not only have more response, but SAVE petrol using 98.

Okay.. now here's something to cheer you up Mr. Grump.
ive ran on 95 for 6month as a test.. i've kept a log on it.. and on average i get 350kms per tank (near empty - tank light on)
now i run on 98 and i get easy 400kms+ per tank (with still 5-6Ls) left in the tank.

If you dropped the whole technical bull crap, that doesn't matter. you'd see that 98 is infact better.

i think overall, honda engines do require better octane, d-series, h-series or b-series. Ive found my d-series runs less kms on 91 than on 95 or 98 for that matter. The car seems more sluggish with 91, im not so sure why, but it does feel alot healthier on premium fuels. I do think 98 is over kill on these engines, but as pointed out, there are more benefits than just knock resistance to be gained.

As far as 100 octane goes, unless the engine was built for that, forget it LOL. Only minority ppl use it, mostly Skyline GTR owners as such. But its been proven that 98 octane can be safely tuned on cars, an making close to 600hp, so i dont see why u really need to run 100 octane.