Re: Best oil/oil filter for 2001 5.3L 180,xxx miles + maintenance recommendations
I use Castrol Syntec,(now Castrol Edge) & Napa filters. I change oil & filter when it rolls over 10,000 miles. I change filter only every every 5,000 miles. I've got 301,438 on my 2000 GMC 5.3L and it's never used any oil.
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