which octane gas do you put?

[yjsjin]

on my kawi manual it said put 90+ octane one time i tried regular gas 85 octane and it seemed like it was harder to start and had less power now im using 91 octane only

[YamaSakiATV]

if it said 90+ why would you put 85? But to answer you question I use 93. It needs 90+ for a reason, they just don't put that on their for shits and giggles...

[LobsterMagnet]

I put in what the manual tells me to.

[fire]

whatever I can afford. My bikes have no minimum requirements

[LobsterMagnet]

Fire, ever had a problem running from low to high octane?

[fire]

Originally Posted by LobsterMagnet

Fire, ever had a problem running from low to high octane?

I have never really noticed anything. Why, Would it happen to cause any noticable problems?

[OldSchlPunk]

Never go lower than what the manufacturer calls for and if you put higher in, you're wasting your money. Higher octane won't get you any more power.

[fire]

Originally Posted by OldSchlPunk

Never go lower than what the manufacturer calls for and if you put higher in, you're wasting your money. Higher octane won't get you any more power.

Good to know, thank you. My manufacturer does not give a minimum octane.

[Akumu]

Manual doesn't say. So...87 it is. (87, 89 and 91 out here)

[Elgix6]

87 only. That what the book says.

[yjsjin]

Originally Posted by YamaSakiATV

if it said 90+ why would you put 85? But to answer you question I use 93. It needs 90+ for a reason, they just don't put that on their for shits and giggles...

i just tried 85 cuz i know someone was using lower dan manufacture octane and he didnt have any prob he was doing that cuz hes bike was like more than 10 yr old the engine mustv been already fucked up anyways he didnt care.. lol

[kevin_stevens]

Originally Posted by fire

whatever I can afford. My bikes have no minimum requirements

I find that difficult to believe. Suzuki has posted octane requirements on every one of their bikes I've had since 1977. I know my TL1000S had one (but not what it was). In fact, I thought it was a DOT requirement.

KeS

Edit: From an online copy of the service manual for the SV1000S -

FUEL (FOR US�� ��ND C��N��D��)
Use only unleaded gasoline of at least 87 pump octane (R/2 + M/2) or 91 octane or higher rated by the
research method.
Gasoline containing MTBE (Methyl Tertiary Butyl Ether), less than 10% ethanol,or less than 5% methanol
with appropriate cosolvents and corrosion inhibitor is permissible .
FUEL (FOR OTHER COUNTRIES)
Gasoline used should be graded 91 octane (Research Method) or higher. Unleaded gasoline is recom-
mended.

[fire]

Thanks Kevin. Lucky for me that most, if not all, gas stations in the area have 87 octane as their lowest rated gasolin.

[qubert]

Using lower octane gas than rated can cause detonation (AKA Autoignition of fuel) what happens is that the temperature inside the cylinder will ignite the fuel mixture before the piston is ready, before the spark (Higher octane gasoline has a higher autoignition temp) This causes bad things for obvious reasons, and can often be heard as a pinging sound. Serious detonation will break your engine, again for obvious reasons -- 1 piston pushing left, one pushing right... something has to give.

All that being said, its not really a problem AFAIK to limp around on lower octane gas IF YOU GET STUCK. Don't romp on the throttle, or push it and you shouldn't have a problem.

[NONo443]

I am going to get crap for this, but 91 (Ron+Mon/2).