Maintenance and Fluid Information for 2006 GMC T6500 Isuzu 6HK1
For the 2006 GMC T6500 Isuzu 6HK1, you will find 15W-40 and 5W-40 in the engine-oil listings. The matching product listings include Heavy-Duty Synthetic Diesel Oil 15W-40, Heavy-Duty Synthetic Diesel Oil 5W-40, Signature Series Max-Duty Synthetic Diesel Oil 15W-40. Those are product matches, not proof that every listed oil meets every requirement for this engine. Check the manufacturer’s oil specification before choosing one.
What synthetic oil options are available for my 2006 GMC T6500 Isuzu 6HK1?
Synthetic engine-oil listings for this vehicle include 15W-40, 5W-40. A synthetic listing does not by itself mean the vehicle manufacturer requires full synthetic oil.
Which oil filter is listed for my 2006 GMC T6500 Isuzu 6HK1, and what is the filter number?
The oil-filter part numbers listed for this vehicle include P559128-EA.
How often should I change the oil in my 2006 GMC T6500 Isuzu 6HK1?
Use the manufacturer’s maintenance schedule for this engine and operating conditions. The available application data does not establish an exact oil-change interval.
