Ideal fuel for 2005 GPX250?

Scottatron · Post by **Scottatron** » Fri Oct 20, 2006 10:16 am

Hello All,

I don't want to open a can of worms with this, but what would be the best fuel to put into an 05 GPX250?

All reports are that Optimax/V-Power is to be avoided.

What about the Shell 95RON fuel?

I recently filled up with Caltex 98RON - as all reports I have read recommend this fuel highly - but in a carby bike is it worth just sticking to 91RON?

Thanks,
Scott

Duane · Post by **Duane** » Fri Oct 20, 2006 10:27 am

91 ron mate

Lainie · Post by **Lainie** » Fri Oct 20, 2006 11:14 am

We use only mobile Premium

Scottatron · Post by **Scottatron** » Fri Oct 20, 2006 11:19 am

Is that the 96 or 98?

Benno · Post by **Benno** » Fri Oct 20, 2006 11:42 am

Mobile is 98, pretty much the same as BP Ultimate. The fuel was a joint venture between companies from memory.

MickLC · Post by **MickLC** » Fri Oct 20, 2006 12:15 pm

From a performance point of view, for the GPX250 it isn't going to make a lot of difference which fuel you use. So from a cost point of view you may as well use the standard unleaded.

mike-s · Post by **mike-s** » Fri Oct 20, 2006 2:01 pm

i did a cost / benefit test of ULP vs PULP on my old 450, i found that using ULP i got 20km/l and using PULP i got 22.5km/l on average (running three tanks of each, didnt matter what style of riding commuting/scratching/whatever it was always repeatable).

Given that i had a 12Litre tank and usually filled up at 200km regardless of if i'd hit reserve or not (i found it better than relying on hitting reserve) and at the time fuel was 108c/l for ULP and 112 for PULP i worked out that i was saving a dollar per tank by running PULP as i was using about 11% less fuel.

Running wise though, i did notice that the bike was a little smoother with the PULP, but thats not saying that the bike was in any way shape or form shit on ULP.

n.b. these results were done on a 19y/o twin cyl bike i owned 2-3 years ago and in an average state of tune, it doesn't mean that you'll neseccarily get the same results i did.

Scottatron · Post by **Scottatron** » Fri Oct 20, 2006 3:09 pm

Thanks all, I will do a few tests/costing and see how I go. I guess I just wanted to make sure that I wouldn't do any "damage" etc.

Neka79 · Post by **Neka79** » Fri Oct 20, 2006 6:34 pm

diesel...its awesome in bikes.....

NO NO im kidding...dont use diesel...

hammer · Post by **hammer** » Fri Oct 20, 2006 6:52 pm

Kero is the go

RG · Post by RG » Fri Oct 20, 2006 11:57 pm

hammer wrote:Kero is the go

+ 10% Ethanol

Tenoq · Post by **Tenoq** » Thu Oct 26, 2006 5:59 pm

91RON.

Unless you've had the bike retuned for premium fuels, you'll get no benefit from using them, and may actually have more problems. My bike became hard to start and was prone to stalling when cold with premium fuels (GPX250).

Neka79 · Post by **Neka79** » Thu Oct 26, 2006 10:32 pm

Tenoq wrote:91RON.

Unless you've had the bike retuned for premium fuels, you'll get no benefit from using them, and may actually have more problems. My bike became hard to start and was prone to stalling when cold with premium fuels (GPX250).

i bet it would be harder to start with deisel!!

hoffy · Post by **hoffy** » Thu Oct 26, 2006 10:50 pm

I run 95 premium, or 98 when Im feeling frisky.

I'd recommend running 95 premium, it may just keep it a little cleaner inside and running good.

Scottatron · Post by **Scottatron** » Fri Oct 27, 2006 8:41 am

hoffy wrote:I run 95 premium, or 98 when Im feeling frisky.

I'd recommend running 95 premium, it may just keep it a little cleaner inside and running good.

What about Shell 95RON? Reason I ask is that I am a tight arse and use the shop docket discount thingies