Just a note about oils: The 2003-2013 5.3 LS motors used oil pumps rated for either SAE 5w-30 or 5W-20. Later motors ALL had pumps rated for 0w-20 oil. In my 2014 Silverado the dealer said I could safely increase the 0w-20 to 5w-30 for long distance towing but not to ever use a higher viscosity than that as thicker oils put excessive strain on the pumps. Not knowing anything different or better, I've followed those guidelines with regular 5K full synthetic LOF schedule, and just turned 337,000 miles. Just something to consider.
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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