synthetic blend

By jrat88
March 11, 2007 in 1999-2013 Silverado 1500 & Sierra 1500

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jrat88

Posted March 11, 2007

Recently I posted a topic here about whether or not to use synthetic or dino on my '01 Silverado. I have elected to try the Castrol Syntec synthetic blend. My question now is this: what type of oil change interval do I have with this oil? I normally run 90% highway miles and have been changing my oil every 3-4000 miles on previous vehicles with dino oil with no problems.

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