hm same here...i've been swapping a bit...half unleaded ...half premium....was always worried about it...but now i use 98% premium and notice a huge difference in the power... _________________ Got something to say?..
www.fairbloodydinkum.com
The Void of Littleozzybloke..
www.littleozzybloke.com
The adverts about Premium giving you better fuel consumption is slightly misleading.
These fuels are slightly more dense than other fuels - they have more weight per litre and so has more fuel molecules per litre than other fuels. So if your Kombi comes equipped with a modern engine computer which senses the unused fuel in the exhaust and resets the mixture to suit, then yes - your Kombi will get better fuel economy with these new fuels.
But if your Kombi has the normal carburettor or mechanical FI and no engine computer (I think that covers 99.9% of Kombis) then you won't see any increase in fuel economy or performance when using the new style "ultimate" premium fuels.
And there is NO advantage in using a fuel with a higher octane than that recommended by the manufacturer - as my article above states, the octane rating is NOT a measure of how powerful the fuel is - it's just a measure of how well the fuel resists detonating/pinging.
All the stock compression aircooled VW engines from the 1500 up to the 2000 Kombi engine recommend 91 RON octane. That's exactly what normal unleaded in Australia is, so that's all you need unless there has been some modification or alteration to the engine requiring a higher octane rating.
regards _________________ Rob
Rob and Dave's aircooled VW site
Repairs and maintenance for the home mechanic
http://www.vw-resource.com
Hi Welcome to the Forum.
Had read your webpage article before and your post is informative as well.
Only problem is that there is no guarantee Australian refineries are producing the claimed octane ratings.
For example in Western Australia we have only one refinery and that is BP.
The formula that BP uses for both unleaded and premiun is the only one by law that we can use in WA.
This was created by "brilliant" lobbying to our State Govt who were convinced that this formula is the cleanest in the world.
There is only one other refinery in the world, another BP in BC Canada , that has same product.
This is was possibly done to stop the independants importing from Singapore and selling for up to 6 cents a litre less.
It is illegal to import fuel into WA even from the other States. _________________ Kombis Keep you Younger
I only use premium fuel with valve additive (rather than standard fuel) as our engine feels, to me, that it is running better... we seem to get better economy, and the engine just feels smoother. It is probably just my imagination, but I reckon Woger enjoys a tastier meal... _________________ ....Woz
I have tried the premium juice and to me it never seemed to make any difference. I just use the unleaded and when i think of it chuck in same additive. It runs fine to me which ever way i go.
I think what ever you are comfortable with, just go that way.
brian _________________ brian and cathy
1990 T3 Goldie
Once A king always a king, once a nights enough.
I just use the unleaded and when i think of it chuck in same additive. It runs fine to me which ever way i go.
I think what ever you are comfortable with, just go that way.
brian
You don't need additive....you don't need additive...you don't need additive.
Read my article above.
VWs never DID need lead in the fuel to stop valve seat recession (that' s what most additives are for).
Regards
_________________ Rob
Rob and Dave's aircooled VW site
Repairs and maintenance for the home mechanic
http://www.vw-resource.com
Last edited by aussiebug on Mon Jan 07, 2008 9:27 pm; edited 1 time in total
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lobbying to our State Govt who were convinced that this formula is the cleanest in the world. 