Quote:
Originally Posted by midiwiz
if they are FT here then it doesn't matter. VGC will cost more. I used 89 octane and the cart runs far better on that. The only time ethanol matter is if it sits for extended periods of time.
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Yamaha recommends using 87 Octane. These golf cart engines are a low compression motor. If you run high octane in a low compression engine the combustion chamber can develop a carbon build up, unburned fuel. This happens over long term so you will probably not notice lower engine performance right away, but it will happen. If you are determined to use high octane, then run Techron which you can buy at any auto store. Techron will break up the carbon build up.