Stupid oil companies...

[homer]

This also is true in about 99% of situations. Very few vehicles require, or get any benefit from, 98 octane fuel.

Thats the most sence about fuel ive seen yet

[jcupit69]

I'd love more places to have 98 octaine. got an rs 250 so i only out 98 in it (at least im supposed to, i do try!) and there are only afew bps and afew mobils around that do it. Being a high performance two stroke i only want to put the best oil and petrol etc in it so as to limit the ware on the engine as much a possible.

Especially annoying when no petrol stations round the rumatukas have 98 octaine, so i have to put 95 in on the odd occasion....its just not as good. Bp on the north side of the tulas should really get 98 in there....keep all the bikers happy

[Ixion]

Dude, have you ever checked out the compression ratio on two strokes?

[Boob Johnson]

So what do they charge for this new 98 anyway?

It's not new, been around for years

[xwhatsit]

Tell that to a modern high compression engine running a lean mix on a hot day!

Hahah yes. Put some 91 in the RS the other day, then got stuck in heavy Auckland traffic in the hot sun. Thing was pinking like a bitch, had to keep the RPM right up there. Horrible. 98, problem went away. But the carburettor isn't exactly perfect right now.

[sunhuntin]

Originally Posted by Bent51
So what do they charge for this new 98 anyway?

used to be 11c ABOVE 91, but im thinking the difference may have gone up. [ie, $1.70 for 91, $1.81 for 98]
its been a while since i worked at that bp, got sick of working with lazy, backstabbing females. now, where i work, im the only full time chick.

[FruitLooPs]

What I want to know is, what happens if you run short on gas and you only have 91 to use. Like Arthurs pass, sure you should have gas, but i've found myself questioning on the RG150 whether I can make the next gas stop if I don't get some at Arthurs.

I always ride with 95+ in it, not sure it really needs it but rather safe than sorry. My 1st gen gsxr750 used to eat fuel like no tomorrow, and I wouldn't trust it from Sheffield to the next station west coast side thats for sure.

Reckon a fairly highly tuned engine like the 750 would start to detonate on 91?, granted it's a pretty old gsxr

[sunhuntin]

What I want to know is, what happens if you run short on gas and you only have 91 to use. Like Arthurs pass, sure you should have gas, but i've found myself questioning on the RG150 whether I can make the next gas stop if I don't get some at Arthurs.

I always ride with 95+ in it, not sure it really needs it but rather safe than sorry. My 1st gen gsxr750 used to eat fuel like no tomorrow, and I wouldn't trust it from Sheffield to the next station west coast side thats for sure.

Reckon a fairly highly tuned engine like the 750 would start to detonate on 91?, granted it's a pretty old gsxr

running 91 wont kill the bike. i run 91 in my bike, and did arthurs last year. i thought i would make it [guesstimate of just under 200k when the road sign said it was 250k] so had to gas up at the pass. stop anyways... good chance for a stretch and watch the kea.

ORRRR, alternately, buy a 5 liter can and fill that with 95 at the last gas stop. if you think you need it, buy 2 to balance the bike.

[Ixion]

What I want to know is, what happens if you run short on gas and you only have 91 to use. Like Arthurs pass, sure you should have gas, but i've found myself questioning on the RG150 whether I can make the next gas stop if I don't get some at Arthurs.

..

Dude , it's a two stroke. DO you folks not know about two stroke compression ratios (ie they ain't got any). The good old 78 octane would be OK.

Any but the most highly tuned engines will be fine on 91 , so long as you take it easy.

[FruitLooPs]

running 91 wont kill the bike. i run 91 in my bike, and did arthurs last year. i thought i would make it [guesstimate of just under 200k when the road sign said it was 250k] so had to gas up at the pass. stop anyways... good chance for a stretch and watch the kea.

ORRRR, alternately, buy a 5 liter can and fill that with 95 at the last gas stop. if you think you need it, buy 2 to balance the bike.

yeah on the way back from greymouth street races a few years ago on the RG I had a car tailing me with a fuel can, I didn't bother with gas at arthurs out of interest. I made it just to the start of the canterbury plains before reserve. I topped up then with the can, but I might've made it anyhow

And Ixion, I hadn't bothered to check the comp ratio on the RG and I didn't have previous experience with 2-stroke. I asked the previous owner what he ran and then when I got the pvalves done a month after purchase I asked Oyster who looks after the streetstock racing and 95 is what the streetstock guys use.

[Ixion]

Have a wee think about what octane rating petrol was aorund when those engines were designed. We didn't always have 95 y'know, or even 91 for that matter.

[jcupit69]

Dude, have you ever checked out the compression ratio on two strokes?

I know the bike will run on 91, but it runs better on 98, and for the small increase in cost id rather put 98 in for the benefits it offers over the 91 and 95. The benefits 98 offers may not be much, but the increased in cost isn't much either, and the bike does run better on 98.

I just prefer putting the best oil and fuel in, to try and make my engine last as long as possible. Same with the spark plugs, i could put cheap 1s in and the bike would still go ok, but id rather spend the extra $$$ and get the best ones i can, so the bike will run as well as possible.

I accept that the bikes dont need the 98 and they will run fine on 91 (and probs 78, but i aint gonna try), im just saying id rather put the best stuff in to get the best out.