5w20 SL GF-3 ??

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No. ISLAC GF-3? I bet that the GTX GF-5 you have in your sump right now would perform neck to neck with GF-3 synthetic oil in your 08 Accent for the OCI's you are comfortable with.
 
The GTX that is GF-5 rated exceeds the performance requirements of GF-3 and ILSAC is backwards capable meaning if a oil is GF-5 certified it exceeds the requirements of previous certifications. So the GF-5 certified oil you use today exceeds GF-3 certification, you can use GF-3 oil if you can find it but good luck it is some old stuff but there is some around if you look hard enough.
 
Originally Posted By: dave1251
The GTX that is GF-5 rated exceeds the performance requirements of GF-3 and ILSAC is backwards capable meaning if a oil is GF-5 certified it exceeds the requirements of previous certifications. So the GF-5 certified oil you use today exceeds GF-3 certification, you can use GF-3 oil if you can find it but good luck it is some old stuff but there is some around if you look hard enough.


+1.....continue what your doing....and sleep well. GF-5 far exceeds the GF-3 on your oil cap.
 
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