please note that your all aluminium built honda engine will be noisy, its inherent to the design. Honda dont spend much money in the noise suppression on civics specially.
Please check and adjust the valve clearances correctly and also dont use overly thick oils in your engine, use a good flowing 5w30 or 10W40 API SM etc oil and change it at about 7000 or 8000 kms making sure your engine has a thermostat valve and "zero" oil leaks. if there is a leak your PCV system wont function and you will make sludge in the engine.
If you are paranoid about the "aath hazaar kilometurr aail change :o " then use full synthetic oil.
personally, I would use caltex delo gold or Mobil Delvac diesel oil - its really HD oil and stands up to any beating you can give it. As you are not in very cold climates the lower 15 viscosity rating wont matter at all.