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What Octane are you running?
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Posted by: chipworkz

So my question is what octane rating is everyone running?
I know you don't need to run higher octane fuel than needed if you don't have a pre ignition knock problem.
The KFX is 12:1 and recommends 91 or higher.
I have only taken it out once so far with standard 91 octane premium and didn't hear any knocking. Has anyone had any problems running premium pump gas?
Thanks

Posted by: Toadz400

It should be just fine running on premium pump gas.

Posted by: spanky101

you should have no issue running the premium fuel which is 93 around here.

Posted by: TWILES

I have tried every type of high-grade gas in western KY on a 05 WR450, 04 450R, 05 Rancher 350, and KLX 125 and the Shell 93 V-Power is the BEST. They all ran like **** off every other brand I have tried eccept the Shell. I don't know why but they do best off the Shell 93.

Posted by: ATC_KING

i would run 94 if i had one just because it is so high compression. just to be on the safe side.

Posted by: TWILES

93 is as high as it goes around here.

Posted by: quadnice

quote:
Originally posted by TWILES
I have tried every type of high-grade gas in western KY on a 05 WR450, 04 450R, 05 Rancher 350, and KLX 125 and the Shell 93 V-Power is the BEST. They all ran like **** off every other brand I have tried eccept the Shell. I don't know why but they do best off the Shell 93.

I believe it was a Shell gas station that I was @ recently, & their Premium 93 gas was Non Oxygenated,.....No ethanol gas

Posted by: QUADROOKIE

Hmmm the only gas avail. around me close that is not ethanol blend is only 89 octane? Are you saying that this engine does not like ethanol?

Posted by: quadnice

In older cars (carbureated)
&
High performance cars
They seem to me, & others I've talked with,
to prefer non ethanol gas premium gas.
I'm going to try some Klotz race fuel & pump gas mix this weekend.

Posted by: TWILES

If you want to pay $10 a gallon for gas, more power too you. Klots was $50 per 5 gallon can 7 years ago.

Posted by: tn ltr450

Picked mine up last friday and went out riding. The dealer gave me a free tank of gas, found out they put in 87 oct. Well it knocked and pinged alot during the 1st tank at all rpms. Filled up the next day with 93 and never heard another ping. Also mine started hard the 1 st tank, but now pops off with ease. Love it.

Posted by: Toadz400

I would be very pissed if the dealership put in 87 octane. If there were any damage from that I bet it would've voided your warranty because you weren't putting in the correct/recommended fuel. I would try and get something out of your dealership for your "hardship"