[Xhifer]

Hello folks, I'm new here and just bought a 1998 honda Civic HX. I'm located in San Francisco, CA. I bought it from an original owner with 146k with original clutch and recently replaced timing belt and water pump.

I was wondering what spark plugs, spark plug wires, and transmission fluid I should use to maximize reliability and FE. I'm planning to continue using 5w30 synthetic oil with either mobil one filter or Wix filter.

Any write up on how to replace the PCV valve on the HX d16y5 motor?

I got 38.8 MPG Doing 90% highway and 10% city in 103 miles of driving. I was going 65-75MPH on highway. I shift at 3,000 RPM. I'm happy with it but more the better if possible for this CA version.

Any more recommendation on what to replace? The car runs extremely well for 146k miles and original clutch!