2006–2010 Kia Optima
By Tom Becker ✓ Certified Mechanic · Published Sep 24, 2026 · Updated Oct 14, 2026
Save $117 by doing it yourself! Shop cost: $174
Quick answer: Engine Oil and Filter Change on a 2006–2010 Kia Optima is rated Moderate and takes about 30-45 minutes. You'll need 6 tools for this job, and parts cost about $57. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Spin-on oil filter for 2006-2010 Kia Optima 2.4L (PH9688 / 51334 type) | — | $10.00 | |
| Engine oil, 5W-20 or grade per owner's manual, about 4.3 liters | — | $41.00 | |
| Drain plug crush washer | — | $6.00 |
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Idle the engine a few minutes so the oil thins, then switch off. Park on flat ground and set the parking brake. On the 2.4L Theta, both the spin-on filter and drain plug are reached from underneath.
Lift the front with a floor jack and rest it on jack stands at the reinforced points, chocking the rear wheels. Shake the car firmly to confirm it sits solidly on the stands — you'll be reaching under the engine.
Place the drain pan beneath the oil pan, loosen the drain plug with a socket, and unscrew it by hand. Let the oil drain until it barely drips. While you wait, check the plug threads and washer condition.
Fit a new crush washer on the plug and start it by hand to avoid cross-threading the aluminum pan. Tighten firmly with a socket, but don't muscle it — aluminum threads strip easily. Wipe the pan dry around the plug.
Aluminum pan on this Theta, so I start the drain plug by hand at least two full turns before touching a wrench. One cross-threaded plug turns a twenty-minute oil change into a pan replacement.
Move the drain pan under the filter on the side of the block; loosen the spin-on with a filter wrench. Unscrew it by hand, keeping it upright so oil stays inside. Verify the old gasket came off with the filter.
Coat the new filter's gasket lightly with fresh oil and thread it on by hand until the gasket touches the block. Turn it another three-quarters of a turn by hand and stop. Hand-tight is correct; a wrench will overtighten it.
Lower the car to level ground and pour fresh oil in through a funnel. The 2.4L takes about 4.3 liters with a filter change — add most of it, then top up in small increments to full.
Start the engine and confirm the oil light goes out; check the drain plug and filter for seepage. Switch off, wait a few minutes, and recheck the dipstick. Reset the service reminder, log mileage, and recycle the oil and filter.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
2006–2010
2006–2010
2016–2020
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