For 2003 Astra Coupe G facelift Opel recommends to use: SAE 0W-30, SAE 0W-40, SAE 5W-30, and SAE 5W-40 and genuine OEM consumables with following part numbers: 1940 650, and 19 40 656. To select the right part or fluid see the table below.

in your garage to make future searches easy.

Condition Value
expand_moreCooling fluid specification
Blue 19 40 656
Red 1940 650
expand_moreEngine oil viscosity
Dexos 2 SAE 0W-30, SAE 0W-40, SAE 5W-30,
SAE 5W-40
GM-LL-B-025 SAE 0W-30, SAE 0W-40, SAE 5W-30,
SAE 5W-40
expand_moreAll other modifications
Dexos 2 SAE 0W-30, SAE 0W-40, SAE 5W-30,
SAE 5W-40
GM-LL-A-025 SAE 0W-30, SAE 0W-40, SAE 5W-30,
SAE 5W-40

Opel recommendations and specifications for oil and fluid for 2003 Astra Coupe.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 Opel Astra Coupe user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Opel warranty policy for your region. In some regions DIY service may invalidate your warranty.

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Opel Astra Coupe service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2003 Opel Astra Coupe you're not only saving money, but also also improving your technical skills and learning something new.

Opel Astra Coupe G facelift model years

Units:
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