I have had a 2014 and now a 2015,,, both with the 5.3 EcoTec motor,,,,,have had so many different opinions on how much oil this engine takes, is it 8 quarts or 8 1/2? And is it Full Synthetic or a Blend? I will probably get mixed answers here also,,,thanks for the help on this topic!
justag3
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I know the OP may want to know for other reasons, but in reality, it takes as much oil as is required to get it to the top of fill range on the dip stick.
According to GM, they recommend DEXOS1 certified oil but there are a lot of oils that are DEXOS1 complient, yet don't sport the Dexos logo and are not officially certified by GM. Regardless, the oil necessary for your truck should be either semi-synthetic or full synthetic as there are no conventional oils meeting the Dexos1 Specs.
According to GM, they recommend DEXOS1 certified oil but there are a lot of oils that are DEXOS1 complient, yet don't sport the Dexos logo and are not officially certified by GM. Regardless, the oil necessary for your truck should be either semi-synthetic or full synthetic as there are no conventional oils meeting the Dexos1 Specs.
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