[A4] Need for Premium Gas in 1.8T quattro?
glenahan at vfemail.net
Thu Sep 21 19:46:01 EDT 2006
Nonsense. The main difference between low and high octane is:
1.) more resistance to knock
2.) sometimes, a better detergent package (since its more expensive)
A turbo engine, by definition, operates at a high effective compression
ratio. So high octane is almost a requirement, mitigated only by an
knock sensor which will retard timing and performance to protect the
More detergent will result in cleaner running.
I have no idea what "more combustible" means in this context, so I wont
On Sep 21, 2006, at 1:46 PM, thejimrose wrote:
> i wonder about this too.. from experience with ducati's, the
> is always run high octane, but lota of guys ran low octane as it's more
> combustible and tended to build up much less carbon in the head +
> not sure how that might translate.. but i seem to get much better
> mileage if
> i run premium, which i think offsets the price of the gas..
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