I Took my motor apart recently I pumped 93 most of the time.I had a whole lot of carbon build up on the pistons.
Cause 9 out of 10 times your car was built to run on 87 octane. Unless you're runnin a B18C or an H22A you dont need it. The rest of the honda motors are low compression, they dont burn that high octane properly. I wouldnt go higher than 89, but at todays prices its really not worth itOriginally Posted by southside