The dealer is not Honda Besides syn isn't recommended or needed in Hondas.Look at the uoa'sQuote:
I have just purchased a Honda Civic Si an 06 with 20K in miles. I asked the dealer about changing over to synthetic as I have run Mobil One on all of my Audis with good results. The dealer stated that Honda does not recommend synthetic il for this engine, somehting to do with the v-tec.
Can you fine folks give me the straight skinny on this. I would like to make the change if it has merit.
What is the story??