Re: [T3] Engine noise

["Daniel Baum" <daniel@type34.info>]

<x-flowed windows-1255>> Sounds like detonation to me.  Very serious.  Back off the throttle til it
> stops when you hear it.

I always either back off the throttle or downshift when this happens.

> To Check if this is indeed your problem, buy premium the next time you 
> fill
> up.  If the problem goes away, it is indeed detonation.

I had wondered whether I needed a higher-octane petrol but I would be quite 
surprised if this is the case. I use 96 octane. Since they stopped selling 
leaded petrol over here a couple of years ago, the 96 octane has had a 
potassium additive added to it (I think this is what they call LRP in 
England). Other options are 95, 98 and 99-octane unleaded. Surely it 
shouldn't require 99 octane?


Daniel 

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