What type of oil to use?
Everything you ever wanted to know about oil and lots more --- http://www.bobistheoilguy.com/motor-oil-101/
Roankirkland ...One thing you can do is refer to your Owner's Manual. It will give the type of oil that Honda recommends. Assuming you have high miles on the car, you could look motor oils like Castrol which makes a high mileage oil or consider a Synthetic Blend type of oil.
Looking for a Used Civic in your area?
CarGurus has 72,283 nationwide Civic listings starting at $1,000.
Search Honda Civic Questions
Honda Civic Experts