The oil drain plug is located at the bottom, behind the oil pan (engine base, at the bottom of the car). The oil plug has a washer to seal it to the oil pan.
The washer should always be replaced with a new one after draining the oil. When buying a filter - buy a washer too. The oil filter is located on the engine side.
The oil filter cannot be replaced except by working from underneath. The vehicle must be raised, securely supported and the filter accessible between the block and bulkhead. There is very little space to work on removing the filter with a standard open-end wrench; it is recommended to use a tip.
The mileage calculations shown in the data are Honda's recommended intervals under assumed normal driving conditions. Normal driving means the vehicle is driven long enough to warm up the oil; typically this is about 15 km. If your daily commute is shorter than this distance, your vehicle use qualifies as severe duty.
Severe operating conditions also include: dusty, dirty or off-road conditions, as well as frequent starting and braking, towing. Regular towing of a trailer also puts the vehicle in this category, as constantly working at the limit of its load capacity. Change the oil and filter twice as often as in normal operation.
Always drain the oil after the engine has been running long enough for the oil to reach normal temperature. Hot oil will flow more easily and remove more contaminants than if the drain was done when the engine was cold. To change the oil and filter:
1. Start the engine and let it warm up to normal temperature, then turn it off.
2. Raise the front of the vehicle and support it.
3. Place a drainage tray with a capacity of at least 4 liters under the drain.
CAUTION: Oil and motor components will be hot. Be careful not to burn yourself.
4. Loosen the drain plug with a wrench. Unscrew it by hand. Hold the internal pressure with the plug, as you unscrew it, the oil will not flow out along the threaded cut. When the last turn of the thread is unscrewed, brush the plug aside and the hot oil will flow into the pan.
5. Allow the oil to drain completely, then install the drain plug and tighten it to 45 Nm. Do not overtighten the plug, or you will have to buy a new crankcase or plug due to thread stripping.
6. Use a filter wrench when removing the filter. Keep in mind that it holds almost 1 quart of dirty, hot oil. Make sure the old gasket is torn off the filter and not stuck to the block.
7. Empty the old filter into the drain pan.
8. Using a clean rag, wipe the filter holder on the engine block. Make sure the rag does not leave any residue that would obstruct the flow of oil.
9. Coat the rubber gasket on the filter with new oil. Screw the filter onto the engine by hand; when the gasket touches the surface of the holder, turn it another 1/2-3/4 - no more, or you will crush the gasket and it will leak.
10. Double check the drain plug; is it in place? Fill the engine with the required amount of new oil. See the table "Capacities".
11. Double check everything: Is the filler cap in place? Is the dipstick in place? Have the drain pan and tools been removed from underneath the car? Lower the car to the ground.
12. Check the oil level with the dipstick. It is normal for the level to be slightly above the full fill marker. Start the engine without using the accelerator pedal and let it idle for a few minutes.
CAUTION: Do not run the engine above idle until it has developed oil pressure, as indicated by the oil pressure indicator.
13. Turn off the engine, let the oil drain for a minute, and check the level. Check for leaks around the filter and drain plug, and correct if necessary.
(Based on materials from the website: hondabook.ru)