Quote:
Originally Posted by Halon
Do people go say a year on the Extended Range stuff? I pretty much do a change in the spring, and change in the fall. And at those intervals it doesn't seem to really matter if I use the extended range. But if it can last me a whole year so I can just do oil changes in the spring, then I might give it a shot.
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Any semi-synthetic or better is good for a full year. I run the regular semi-syn ACDelco Dexos1 for a full year in my Cruze, two years in the Volt. My dad runs the M1 EP for a full year in his C6, and I plan to do the same in my C7 once I'm out of free oil changes at the dealer and switch over to DIY.