Stale fuel? Explain

[Metal Doctor]

Anyone ever used that octain booster stuff you get in a bottle and mix with your fuel???

[cave weta]

Any difference can only be in the additives, usually well less than 0.01%, and usually arriving in the same container, from the same supplier. You work it out.

I use the one with Techron in it- you know that it actually cleans your car as you drive!- fuckin amazing technology -and it is no dearer than that ordinary shit that the other companies sell.....

[Metal Doctor]

I use the one with Techron in it- you know that it actually cleans your car as you drive!- fuckin amazing technology -and it is no dearer than that ordinary shit that the other companies sell.....

haha, i should get the missus to put that in her car! maybe it wont look as shit after a tank full!

[Damantis]

i always run all my bikes on the best i can get at the pump, i never use 91.

i was thinking about using racing fuel in the KTM on the dirt, i've heard about some guys using it, and i can smell it when i go riding. A fella told me you can buy it from ardmore air field or a service station in pukekohe sells it. apparently some guys mix it 50/50 with 98ron, and someone told me you need a racing licence to buy it! i have no idea if any of this is true!

so is high octain racing fuel and Avgas the same thing then?

Doesn't that mean the bike isn't burning all of it?

[caspernz]

Doesn't that mean the bike isn't burning all of it?

Nope. Just think of the smell of clean, dry firewood versus old socks. Both burn, different shall we call it odour

[Ocean1]

i always run all my bikes on the best i can get at the pump, i never use 91.

The best fuel you can get for your bike is the one it was designed to run. The dudes that decided what compression rate, ignition timing, valve timing, port configuration and a few more design criteria your engine should have knew what they were doing. Read your manual.

so is high octain racing fuel and Avgas the same thing then?

High octane racing fuel isn't a fuel standard. Avgas is. It'squite likely that anyone selling something called high octane racing fuel is, in fact providing something that meets the industry standard definition of avgas.

[Damantis]

Nope. Just think of the smell of clean, dry firewood versus old socks. Both burn, different shall we call it odour

Sorta like the difference in smell between Hot Stripper Panties and Homeless, Street-walker Panties. I get it now.

I've run my CBR on 91, 95 and 98 and while there seems to be a tiny bit more acceleration / oomph on 98, the fuel economy is pretty much the same kms per tank only a little more expensive to fill. I use 91 most of the time and give it some 98 when I know I wanna go fast ( at the drags or a trackday of course )

[caspernz]

Sorta like the difference in smell between Hot Stripper Panties and Homeless, Street-walker Panties. I get it now.

I wouldn't know about that...I'm married

[FJRider]

I use the one with Techron in it- you know that it actually cleans your car as you drive!- fuckin amazing technology -and it is no dearer than that ordinary shit that the other companies sell.....

Does it do the windows too ... ???

[Berries]

Works fine on my frying pan.

[Brian d marge]

Get a glass jug and put a litre in. Sit and watch it for a bit.
Look at all the wafty goodies wafting away.
Bye Bye exciting wafty bits. Hello stale remaining bits, I guess its just you and me now the excitment has left

hours of fun in winter ,

Stephen

[Brian d marge]

Octane booster? It's simply one of the chemicals that usually make up petrol anyway, they just add more of it. Octane ratings are largely bullshit anyway, a calculated performance value, rather than any level of "goodness". Even ACTUAL Octane rates are simply indicitive of another more accurate performance value, knock rate, which is the actual range of conditions that the fuel will detonate at.

Racing fuel has a slightly higher knock rate, and because of the additive used to make it that way it's not strictly speeking "lead free".

And unless your engine is specifically designed to run racing fuel the most likely performance change will be that you'll fuck it.

shhhh

They wont believe you , and if you add that most Jap engines are designed to run on 91 , which in asia is about 80 , 85 mon ( or RON cant remember off head ) , and then if you get oil.water leaks into the head from any source , WEEELL you can kiss good bye to the preiviouse rating !!!

Stephen

ps , you wont fk the engine it just will run at a differing temp/ loading , which affect ( effects?) component life ( a little ) ...

Ever seen a seen an brit single exhaust pipe glow red ...hehehehe

[ac3_snow]

i always run all my bikes on the best i can get at the pump, i never use 91.

i was thinking about using racing fuel in the KTM on the dirt, i've heard about some guys using it, and i can smell it when i go riding. A fella told me you can buy it from ardmore air field or a service station in pukekohe sells it. apparently some guys mix it 50/50 with 98ron, and someone told me you need a racing licence to buy it! i have no idea if any of this is true!

so is high octain racing fuel and Avgas the same thing then?

I have used av/racing gas in my 2t bucket, after melting the top of my piston I wanted a bit more insurance against det. Brought it from the mechanics behind shell next to waikaraka park in Onehunga. Cost $4.20 a litre though!
Have since gone back to using 98 as turns out my problem was just the wrong temp spark plug and I have noticed no difference performance wise between the two, maybe if I changed the compression again I would consider the extra cost.

From my understanding there is generally (very slightly) different ignition timing required for an engine to run at optimum on different fuels.

[Hoon]

I used to get my avgas from the servo just before Pukekohe Race track. From mem it was about 20% more expensive than 91/95. That was for my high comp 2-stroke race bike. My 4 stroke race bikes I just use 91.

Another issue with stale fuel is that its knock factor (octane rating) can be reduced causing detonation. Driving down the line one weekend in my car almost out of gas I pulled into some Ma & Pa gas station and filled up. Got a few mins down the road and my engine overheated and cut out. Had the stereo up and didn't realise it was detonating (felt it was a little low on power but just gave it more gas in my ignorance). After waiting ages for it to cool down and replacing all the water in the radiator (at the time I just thought I must have been low on water) it ended up doing the same thing again a few minutes later. Basically had to limp around until I eventually diluted enough of the gas in my tank with proper petrol for it to go away. Damn shit fuel almost destroyed my engine!

[F5 Dave]

I have used av/racing gas in my 2t bucket, after melting the top of my piston . . . .
Have since gone back to using 98 as turns out my problem was just the wrong temp spark plug . . ..

Ahh, the sun comes out & the truth is read. Sure it wasn't that crappy old oil you were using?