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    Using 10W-30 instead of 5W-30 - 2007 Silverado

    Hah, you guys have me all kinds of confused now.
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    Using 10W-30 instead of 5W-30 - 2007 Silverado

    I currently use synthetic (M1, Synpower, etc.) but usually change it at no higher than a 5,000 mile OCI (it's usually around 3,500 to 4,000 miles), so I figure to save some money, I might as well switch to a good quality dino. The reason I asked about using 10W-30 is my local Costco carries...
  3. C

    Using 10W-30 instead of 5W-30 - 2007 Silverado

    Quick question...will it hurt if I use 10W-30 oil instead of the recommended 5W-30 oil in my 2007 new body style Chevy Silverado? I live in the Dallas/Fort Worth area, so we don't really see much cold weather in the winter, and the summers are brutally hot, so I thought I'd just check and see...
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    Oil/OCI recommendation - 07 Chevy Silverado

    Thanks for the recommendations...now here's another dumb question. My truck has a little over 50,000 miles on it now, and I've been running Royal Purple in it since it was somewhere between the 25,000 and 30,000 mile mark. I'm for sure not using RP anymore due to the cost of it, but was curious...
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    Oil/OCI recommendation - 07 Chevy Silverado

    All, Just wanted to preface this by saying I've been lurking a while but had a question and thought I'd pose it to the board since there's quite a few knowledgeable folks on here. I'm going to be moving from the Dallas/Fort Worth area to west Texas in a few months where it's quite a bit more...
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