Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Kia Optima V6-2.7LFACTORY OEM SERVICE PROCEDURE
Engine Oil: Service and Repair
OIL AND FILTER
CAUTION:
- Prolonged and repeated contact with mineral oil will result in the removal of natural fats from the skin, leading to dryness, irritation and dermatitis. In addition, used engine oil contains potentially harmful contaminants which may cause skin cancer.
- Wear protective clothing and gloves in order to minimize the length and frequency of contact of your skin to used oil. Wash your skin thoroughly with soap and water, or use water-less hand cleaner, to remove any used engine oil. Do not use gasoline, thinners, or solvents.
- In order to preserve environment, used oil or used oil filter must be disposed only at designated disposal sites.
1. Park the car on a level ground.
Start the engine and let it warm up.
2. Turn the engine off.
3. Drain engine oil.
(1) Remove the oil filler cap.
(2) After lifting the car, remove the oil drain plug(A) and drain oil into a container.
4. Replace the oil filter.
(1) Remove the oil filter(B).

(2) Check the part number of a new oil filter is as the same as that of the old one.
(3) Replace the oil filter.
(4) Tighten it slightly until the o-ring of the filter cap contacting on its position.
(5) Tighten it with the specified torque.
Tightening torque
16.7 - 24.5Nm(1.7 - 2.5kgf.m, 12.3 - 18.1lb-ft)
5. Refill with engine oil.
(1) Install the oil drain plug with a new gasket.
Tightening torque
34.3 - 44.1Nm (3.5 - 4.5kgf.m, 25.3 - 32.5lb-ft)
(2) Fill with fresh engine oil, after removing the engine oil level gauge.
Capacity
Total : 4.8 L (5.07 US qt, 4.22 lmp qt)
Oil pan : 4.2 L (4.43 US qt, 3.69 lmp qt)
Drain and refill including oil filter : 4.5 L (4.75 US qt, 3.95 lmp qt)
Oil quality : ABOVE API SJ / SL or SAE 5W-20
(3) Install the oil filler cap and the oil level gauge.
6. Start the engine and ensure that no oil is leaking from the drain plug or the oil filter.
7. Recheck engine oil level.
CAUTION:
- Prolonged and repeated contact with mineral oil will result in the removal of natural fats from the skin, leading to dryness, irritation and dermatitis. In addition, used engine oil contains potentially harmful contaminants which may cause skin cancer.
- Wear protective clothing and gloves in order to minimize the length and frequency of contact of your skin to used oil. Wash your skin thoroughly with soap and water, or use water-less hand cleaner, to remove any used engine oil. Do not use gasoline, thinners, or solvents.
- In order to preserve environment, used oil or used oil filter must be disposed only at designated disposal sites.
1. Park the car on a level ground.
Start the engine and let it warm up.
2. Turn the engine off.
3. Drain engine oil.
(1) Remove the oil filler cap.
(2) After lifting the car, remove the oil drain plug(A) and drain oil into a container.
4. Replace the oil filter.
(1) Remove the oil filter(B).
(2) Check the part number of a new oil filter is as the same as that of the old one.
(3) Replace the oil filter.
(4) Tighten it slightly until the o-ring of the filter cap contacting on its position.
(5) Tighten it with the specified torque.
Tightening torque
16.7 - 24.5Nm(1.7 - 2.5kgf.m, 12.3 - 18.1lb-ft)
5. Refill with engine oil.
(1) Install the oil drain plug with a new gasket.
Tightening torque
34.3 - 44.1Nm (3.5 - 4.5kgf.m, 25.3 - 32.5lb-ft)
(2) Fill with fresh engine oil, after removing the engine oil level gauge.
Capacity
Total : 4.8 L (5.07 US qt, 4.22 lmp qt)
Oil pan : 4.2 L (4.43 US qt, 3.69 lmp qt)
Drain and refill including oil filter : 4.5 L (4.75 US qt, 3.95 lmp qt)
Oil quality : ABOVE API SJ / SL or SAE 5W-20
(3) Install the oil filler cap and the oil level gauge.
6. Start the engine and ensure that no oil is leaking from the drain plug or the oil filter.
7. Recheck engine oil level.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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