Originally Posted by clrussell
I had a 2013 5.3 come in with 6000 miles on it that already had to have 1qt added to it at about 4500 miles. I don't know what's going on with the oil consumption on the 5.3, but it makes me almost not want one 07 and newer. Don't get me wrong I love gm and the 5.3, but they need to do something with it. I know of multiple 07+ 5.3s that use oil. I've got 3 that come in about every 25000 and need a new spark plug in #1 because its oil fouled. And I don't work at a gm dealership
I can attest to the 5.3L oil consumption. My 2007 new body style would use 1 to 2 quarts between changes at 5,000 intervals. Changed the oil at nearly 170k miles and it was 2.5 qts low. I traded it in the following week for a Tundra 5.7L and couldnt be happier.