Luckydog Posted July 5, 2007 Share Posted July 5, 2007 I just happened to be thumbing through the Owners handbook of my Holden Calais just now, when I came across somewthing that made me sit up! Apparently my six cylinder 2.6cc Engine was made to run on 91. Using 95 it said will not improve performance.......For two years I have been paying for 95, which has almost doubled in price, when I could have saved some Bht by putting 91 in the Tank. Maybe you can use 91? Have a look at the Book......... Link to comment Share on other sites More sharing options...
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