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Is 91 Octane Required on Si model ?

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54K views 22 replies 10 participants last post by  Bewater  
#5 ·
89, 91... and the VW's here get carbonized inside with the normal 95. So the real enthusiasts here only drive with 100 or 102, which is quite expensive. 😅

Is fuel with cleaning additives available in the US?
Has the 1.5T from Honda problems with carbon on the valves with the 89 or 91 octane stuff?
 
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