I'm using Caltex Silver (93RON) and the ignition timing on my GA13 is already at maximum setting, no more room for more advance setting.
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The most expensive fuel I've tried before was Petron Blaze but I did not like it for it will leave an orange brown residue on the sparkplugs. I just stick with Caltex Silver, less color dye unlike the 95RON fuel with thicker red dye that will only clog the carburetor.
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Originally Posted by
poy
hehehe... but advancing the ignition timing more will require a much a little bit expensive nga fuel, like shell v-power o kanang mga tag-as ug octane rating nga gasoline...