Castrol GTX High Mileage 5w30 Synthetic Blend OCI

[TheLawnRanger]

What is the OCI for CastrolGTXHighMileage5w30Synthetic Blend oil? I'm thinking about using it in a 2011 Impala with a 3.5l engine.

 

[atikovi]

Between 3,000 and 7,500 miles.

 

[Zaedock]

We used to have a Malibu Maxx with the 3.5L and followed the OLM.

 

[rob1715]

$5 more go with full synthetic.

 

[SR5]

Between 3,000 and 7,500 miles.

^ Exactly

For me, it would most likely be 5,000 to 6,000 miles