What is the 2007 chevy silverado 2500hd oil type?

Depending on the configuration of Your 2007 Chevrolet Silverado 2500HD, You'll have one of three different engine options. Your truck may come with A6.0L V8 engine, a larger 6.6L V8 diesel engine, or a supersized 8.1L V8 engine. Each, predictably, uses different oil. Both gasoline engines use SAE 5W-30 full synthetic oil, though SAE 5W-40 can be substituted over the short term. The 6.0L useS6.0 quarts, while the 8.1L useS6.4 quarts. The diesel engine, on the other hand, useS-10.0 quarts of SAE 15W-40 full synthetic diesel oil. It's also possible to use SAE 5W-40 in this application, and it's recommended when ambient temperatures are below 0 degrees Fahrenheit. Otherwise, it's best to always use the manufacturer's recommended oil type.