killing the octane myth (next death is brands)

[ohgood]

For the last year I've been trying pretty much every type of petrol available to me, and I really find no difference in my GS. She likes 91 just as much as the 98 vortex fuel i put in it once, which is handy cause 98 is bloody expensive. I do however sometimes wonder about carbon buildup from lower octane fuels but i guess you'd be rebuilding the thing before it killed your engine, no?

ahh yes, the carbon myth. lower octane fuels burn faster, and ignite more easily, which usually means



less carbon.

[ohgood]

hey...if not, why not...it was just to see if it did actually work.

On topic though I will say this...in the gs, I haven't noticed any difference between 97 and 93. However, I also have a scooter. Because the scooter has a 4 litre tank, it's not hard to finish off a tank of gas quickly. I fill up at the same petrol station up the road from me every week on a Thursday and it takes me exactly a week to finish off a tank of gas. The fuel is sasol...locally manufactured from coal. I drive the same route every day to work. Because it's a scooter, I spend most of that ride with the throttle wide open. The scooter is not limited by anything other than the gearing and the weight of the bike (no electronic limiters etc in the cdi).

Now...having said all that...of I put in 93, she maxxes out at 80-85km/h. If I put 97, she hits 90. Not to say that the speedo is accurate, but it does get me an extra 5km/h.

Not only that, but I have also noticed that on 93, I average about 85km per 4 litres...which I know isn't great, but it's because I spend most of the ride in stop-start traffic. When I put in 97, I can rode for an extra day on the weekend and do an average of 93-95km on a tank.

Now, I realise that this could speak volumes about the quality of the 93 petrol available over here more than it does about octane rating, but it is the reason I use ONLY 97 in my vehicles. Or whiskey once.

is it fuel injected ?

[codajastal]

What's the best fuel for my DL650?


Sent from my iPad using a big stick

[Janx101]

For the last year I've been trying pretty much every type of petrol available to me, and I really find no difference in my GS. She likes 91 just as much as the 98 vortex fuel i put in it once, which is handy cause 98 is bloody expensive. I do however sometimes wonder about carbon buildup from lower octane fuels but i guess you'd be rebuilding the thing before it killed your engine, no?

ahh yes, the carbon myth. lower octane fuels burn faster, and ignite more easily, which usually means



less carbon.

I thought a well tuned engine produced less carbon deposits?

[slipperymongoose]

Your wrong janx a well tuned engine produces POWER!!!!!! On vortex 98 no less

[Janx101]

Nah .. That's a well built engine for power! ... KB500+CID .. Nitromethane fuel ... That's power

[Zookmang]

For the last year I've been trying pretty much every type of petrol available to me, and I really find no difference in my GS. She likes 91 just as much as the 98 vortex fuel i put in it once, which is handy cause 98 is bloody expensive. I do however sometimes wonder about carbon buildup from lower octane fuels but i guess you'd be rebuilding the thing before it killed your engine, no?

ahh yes, the carbon myth. lower octane fuels burn faster, and ignite more easily, which usually means



less carbon.

So i get good performance and less carbon from 91 for less money! Tops!

[slipperymongoose]

Ship engine (big one) that's power

[nutmunk]

hey...if not, why not...it was just to see if it did actually work.

On topic though I will say this...in the gs, I haven't noticed any difference between 97 and 93. However, I also have a scooter. Because the scooter has a 4 litre tank, it's not hard to finish off a tank of gas quickly. I fill up at the same petrol station up the road from me every week on a Thursday and it takes me exactly a week to finish off a tank of gas. The fuel is sasol...locally manufactured from coal. I drive the same route every day to work. Because it's a scooter, I spend most of that ride with the throttle wide open. The scooter is not limited by anything other than the gearing and the weight of the bike (no electronic limiters etc in the cdi).

Now...having said all that...of I put in 93, she maxxes out at 80-85km/h. If I put 97, she hits 90. Not to say that the speedo is accurate, but it does get me an extra 5km/h.

Not only that, but I have also noticed that on 93, I average about 85km per 4 litres...which I know isn't great, but it's because I spend most of the ride in stop-start traffic. When I put in 97, I can rode for an extra day on the weekend and do an average of 93-95km on a tank.

Now, I realise that this could speak volumes about the quality of the 93 petrol available over here more than it does about octane rating, but it is the reason I use ONLY 97 in my vehicles. Or whiskey once.

is it fuel injected ?

Nope...carb.

[mister]

What's the best fuel for my DL650?


Sent from my iPad using a big stick

According to the owners manual for a k4 - before you bike's year - http://www.v-strom.co.uk/downloads/DL650K4OwnersManual.pdf the answer is 91 or higher (87 or higher for Canadians) 

[codajastal]

What's the best fuel for my DL650?


Sent from my iPad using a big stick

According to the owners manual for a k4 - before you bike's year - http://www.v-strom.co.uk/downloads/DL650K4OwnersManual.pdf the answer is 91 or higher (87 or higher for Canadians) 

[twocool]

"Going to church doesn't make you a Christian any more than standing in a garage makes you a mechanic."


Interesting statement....

But hanging out in garages is a good way to BECOME a mechanic...a first step anyway..

Cookie

[Janx101]

So the thread is about having something to argue over then?! .....  ... Sounds fair enough I spose .. Like every other thread and forum ultimately eh

[codajastal]

"Going to church doesn't make you a Christian any more than standing in a garage makes you a mechanic."


Interesting statement....

But hanging out in garages is a good way to BECOME a mechanic...a first step anyway..

Cookie

Not if you are the only one in the garage!!

[mr. happy]

now that's just not true.

you, and a digital camera to record your moves to put it back together (or for the archaic a notebook and pencil) can teach one volumes.

i was a mechanic long before someone else taught me anything.

[Suzuki Stevo]

now that's just not true.

you, and a digital camera to record your moves to put it back together (or for the archaic a notebook and pencil) can teach one volumes.

i was a mechanic long before someone else taught me anything.

True...I started following my father around as soon as I could walk (pay attention, and the questions better be good), by 14 I was pulling engines unassisted, at 16 I went into a full time job at a truck repair shop where my formal training actually started.

[Zookmang]

That's quite true, i had an old veedub i was working on once and by labelling and taking pictures i could properly see how the thing worked step by step. Taught me lots, especially the fact that veedubs are rustbuckets.