If it were my 02 Civic, I'd be running MaxLife Dex/Merc. In fact, that's exactly what I am doing in an 01 Civic with ~170k and soon an 07 Accord too. Reading recent MaxLife threads on this board, many Honda owners are currently using ML, some even preferring it over pricey DW-1. ML is highly respected here, and with spec'd Z-1 discontinued for your vehicle, ML a solid choice imo.
It's readily available at ~$4.50/qt in the gallon jug, either thru Advance Auto or Walmart online shipped to your door. Quite a savings over DW-1 which is $8.25/qt list, which is what most stealerships quote.