The 2005 GMC Yukon oil type and capacity iS5w30 and 6 quarts for the 6.0l v8 engine. Having high quality oil is important for the engine to run smoothly. You will run into issues with the oil at some point. Bad oil can cause the engine to stop working. A common problem is an awful burning smell. This needs to be inspected as soon as possible or the car might explode. Knocking noise may arise from the engine. You could experience poor gas mileage. Your oil needs to be replaced eventually. Every 5,000 to 10,000 miles is a good rule of thumb. If You don't replace it, there will be issues with the engine.
John A.
January 2, 2020
The 2005 GMC Yukon comes with three engine options: the 4.8L V8, the 5.3L V8 (non-flex), and the 5.3L V8 (Flex). All three take 6 quarts. The 2005 Yukon Denali's 6.0L V8 standard engine uses 6 quarts. The 2005 Yukon XL's 5.3L V8 (non-flex), 5.3L V8 (Flex), and 6.0L V8 all require 6 quarts. The optional 8.1L V8 for the Yukon XL takes 6.4 quarts. The viscosity is the same for all engines across all the versions of the Yukon 5W30 synthetic oil.
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