I got my new 2014 Honda crv, which gas grade should I use currently, 87 or 89?
The user manual says use 87 or higher. I am thinking maybe I should use 89 during break-in period? I feel i am a little overconcerned?
Added (1). Manual says:　
Fuel recommendation: Unleaded gasoline with a pump octane number 87 or higher required
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