How to Replace a 1999 Honda Civic Oil Pan
The oil pan on a 1999 Honda Civic is the reservoir that holds all of the oil needed to operate the engine. The oil pan is located on the underside of the engine, and it is made of steel, so it does not require normal replacement. The only time that an oil pan requires replacement is if it was damaged by striking an object, which would likely cause it to leak. As a result, an oil pan replacement is an uncommon repair, but a likely necessity if you have a major oil leak.
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Instructions
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1
Drain the engine oil. Use a socket to loosen the drain plug on the Honda Civic oil pan. Use a drain pan the collect the oil as it drips from the drain plug.
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2
Remove and replace the oil filter. Use an oil filter wrench to loosen the oil filter, and replace the filter with a new one. Be sure to use some oil to lubricate the threads on the filter; this will make it easier to remove at the next oil change.
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3
Unbolt the oil pan. The oil pan is held in place with bolts. Depending on the powertrain options on your Civic, you may find it necessary to move the exhaust system out of the way to have access to the pan. While unbolting the pan, be sure to support it using a jack stand or a traditional floor jack. This will prevent the oil pan from crashing to the ground.
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4
Remove the old gasket. Pieces of the old gasket may still by stuck to the underside of the engine. Use a rag and an mild cleaner like transmission fluid to scrub off the remaining gasket material.
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5
Place a new gasket on the new oil pan. Before mating the new oil pan to the engine, you must replace the gasket. Honda Civic oil pans use a liquid gasket available at all auto parts stores. Place a small bead of the gasket material around the perimeter of the oil pan.
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Attach the new oil pan. Place the new oil pan on the Civic so that it lines up with the threads on the underside of the engine. Reinsert the bolts and make sure that they are tight. If the new oil pan does not have a drain plug, use the one from the old oil pan or purchase a replacement.
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7
Fill the engine with oil. Use an oil grade appropriate to your driving style and the weather conditions in your area.
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Start the engine and check for leaks. If any leaks are found, you may need to drop the new oil pan and add more liquid gasket. If the leak persists, there may be a leak in addition to the one near the oil pan.
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Tips & Warnings
When refilling the oil, be careful to avoid overfilling. Overfilling the oil could cause the crankshaft to "whip" the oil, creating air bubbles and reducing lubrication in the engine.
References
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