Below you will find the best synthetic oil for a 2003 Kia OPTIMA. Maximize your vehicle's potential with 100% full synthetic oil that is made in the USA! For more than the past 50 years, AMSOIL has perfected the art of maximizing efficiency and engine life. The advanced synthetic formulas deliver superior protection from heat, friction, and wear, keeping engines as good as new for miles. Upgrade to AMSOIL today and experience better performance, reliability, and reduced oil consumption. Click add to cart for more details. Sign up as a preferred customer and get discounts and more! The oil type, capacity and oil filter (if available) are listed below and verified for accuracy. Upgrade now!
Recommended oil for my 2003 Optima
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Premium Protection 10W-40 Synthetic Motor Oil | Protect your vehicle with the world's best synthetic oil for your Optima! | With filter 5.1 quarts After refill check oil level. |
AMOQT-EA
Add To Cart  Add To Cart |
| XL 10W-40 Synthetic Motor Oil | Protect your Optima now with Amsoil products! Made in USA! | With filter 5.1 quarts After refill check oil level. |
XLOQT-EA
Add To Cart Add To Cart |
Recommended oil filters for my 2003 Optima
| Product Name | Product Description | Product |
|---|---|---|
| AMSOIL Ea Oil Filters | Get this best oil filter for the 2003 Kia Optima and it is recommended for 15,000 miles/one year, whichever comes first, in normal or severe driving conditions. Made in USA. |
EA15K12-EA
Add To Cart Add To Cart |
| WIX Oil Filter | WIX oil filter change intervals for your 2003 Kia Optima are extended OEM recommendations to match the drain intervals of AMSOIL XL Motor oil. (12,000 miles or 1 year, whichever comes first). |
51334-EA
Add To Cart Add To Cart |
Recommended transmission fluids for my 2003 Optima
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| Manual Transmission & Transaxle Gear Lube 75W-90 | Manual Transmission Fluid |
5-SPD 4.4 pints | This synthetic manual transmission and transaxle gear lube is made to protect from friction and keep viscosity for extended component and fluid life. You will get smooth and fast performance from synchronizers and gears. Enjoy quick and smooth shifting. It is made to exceed protection under severe conditions and it blows the doors off of regular fluids which are limited in protection. Protect your 2003 Kia Optima. |
MTGPK-EA
Add To Cart Add To Cart |
| Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid | Automatic Transmission Fluid |
4 speed F4A42 Total Fill 8.2 quarts | Amsoil's Signature Series Multi-Vehicle Synthetic automatic transmission fluid is made to blow the doors off any regular or conventional ATF fluids on the market and our oil surpasses the performance needs of most vehicles. Protect your transmission and avoid costly repairs. This fluid has an advanced formula to give awesome top-notch protection under harsh operating conditions. Transmission repairs are expensive so protect your vehicle with this great fluid! |
ATFPK-EA
Add To Cart Add To Cart |
| OE Multi-Vehicle Synthetic Automatic Transmission Fluid | Automatic Transmission Fluid |
4 speed F4A42 Total Fill 8.2 quarts | Outsanding protection and resists varnish! Change interval based on your Optima's recommendation. |
OTFQT-EA
Add To Cart Add To Cart |
Transmission filters
| Product Name | Product Description | Product |
|---|---|---|
| WIX Oil Filter | WIX oil filter change intervals for your 2003 Kia Optima are extended OEM recommendations to match the drain intervals of AMSOIL XL Motor oil. (12,000 miles or 1 year, whichever comes first). |
51064-EA
Add To Cart Add To Cart |
Recommended coolants for my Kia Optima
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Passenger Car & Light Truck Antifreeze & Coolant | maximum protection for your 2003 Kia Optima under extreme temperatures and operating conditions! Lasts up to 150,000 miles or five years! (whichever comes first) |
ANTPC1G-EA
Add To Cart Add To Cart |
|
| Low Toxicity Antifreeze and Engine Coolant | Lasts in your 2003 Kia Optima for up to 150,000 miles or five years! (whichever comes first). Biodegradable! |
ANT1G-EA
Add To Cart Add To Cart |
Have you tried Amsoil? It's seriously the best synthetic motor oil out there. It keeps your car running smoothly for so much longer than other oils. Even in extreme temps, it protects your engine like a champ and cuts down on wear and tear. Plus, it's way better for the environment and can even improve your fuel economy. You won't even believe how much better protection you can get with it. And the best part? They have products specifically made for all kinds of vehicles, so you're covered no matter what you're driving. Seriously though, don't even bother with anything else - make the switch to Amsoil. Your car will thank you.
