Chevy V6 (Colorado...) - best oil?

IF
I bought off the shelf oil
This would probably be my go to oil
 

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I wouldn't really say that 7.5 is an extended oci. I'm sure the recommended Dexos 5w30 SP, gf-6 will hold up just fine.
On one of those 3.6s they 7500 is extended. Anything over 3000-5000 and they have a lot of timing chain problems!

I'm a fan of 10K myself. But I don't own any vehicles with known timing chain problems from extended oil changes
 
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