The oil drain plug on a 2008 Honda Civic sits on the bottom of the engine oil pan. It is a hex-headed bolt that you loosen with a 17 mm wrench to drain oil into a pan. Access is from underneath the vehicle; raise the front of the car if needed and perform the task with the engine warm but not hot.
Where to look and how it sits on the pan
From under the car, locate the oil pan, a shallow metal tray bolted to the bottom of the engine. The drain plug is at the bottom of this pan and is typically oriented toward the front of the car. If your Civic has an undercar shield or skid plate, you may need to remove or loosen it to gain access.
Engine variants and exact position
1.8L i-VTEC (R18A1) engine
For the common 1.8-liter engine in 2008 Civics, the drain plug sits on the bottom of the oil pan, usually toward the front or passenger-side area. It is typically removed with a 17 mm socket or wrench. A copper washer or crush washer is often used and should be replaced when reinstalling.
2.0L engine used in the Civic Si
In the 2008 Civic Si, which uses a 2.0-liter engine, the drain plug is also on the bottom of the oil pan. It is accessible from underneath and generally uses a 17 mm fastener. As with other Hondas, replace the washer if present and torque to the factory specification when reassembling.
Regardless of engine variant, the drain plug is located on the bottom surface of the oil pan. If you’re unsure of your exact trim, consult the owner's manual or a service manual for the precise location and torque specification.
Tools and materials you’ll need
Having the right tools on hand makes the oil-change process smoother and helps prevent damage to the drain plug or pan.
- 17 mm socket or wrench
- Oil drain pan
- New washer (if the old one is copper, often included with a new drain plug or oil-change kit)
- Appropriate grade and quantity of engine oil (check the owner's manual)
- New oil filter
- Car jack and jack stands or ramps
- Rags or paper towels for cleanup
With the right tools prepared, you can safely drain the old oil, replace the drain plug and washer, install a new filter, and refill with fresh oil according to the vehicle’s specifications.
Safety and best practices
Always work on a cool engine and ensure the car is on level ground and securely supported. If your Civic has a skid plate, remove it to access the drain plug. Dispose of used oil responsibly at an approved recycling facility, and wipe up any spills promptly.
Summary
The oil drain plug on a 2008 Honda Civic is located on the bottom of the engine’s oil pan and is accessed from beneath the vehicle. It is a hex-headed bolt, typically requiring a 17 mm socket or wrench, and should be replaced with a new washer when reinstalling. Torque the plug to the factory specification as outlined in the owner's or service manual, and follow proper oil-change steps for your specific engine variant (1.8L or 2.0L Si).