Originally Posted by MerF
93 Octane is not "cleaner" or better in any way, it just burns differently.
I don't know how that could be...
Not based on my experience. Put 87 in a Honda, Nissan or Toyota and see if it continues to start everytime. When you're done cranking the engine for 20 minutes, try the higher octanes and see if that makes a difference. I've been through fuel line freeze up, poor acceleration, knocking and pinging and just plain not starting. Plus, some stations even use detergents in their fuel to help keep your fuel system cleaner. I'd say that's better than not...