Due to the engine pinging noise I have let Honda put in whatever the hell they use and then I will use full synthetic, and swear by Mobil 1, have had an engine fail due to Motul Turbolight, and I even use Mobil 1 in my rotary which is something alot of oldies swear is BAD cause synthetic does not burn (rotors have oil injection for those that don't know), though I have never had a problem and pulling the engine done there is less deposits so go figure...