Maintenance and Fluid Information for 2004 GMC C7500 Topkick 207/210/230/250/275/300 HP Isuzu 6HK1
If you are planning an oil change on a 2004 GMC C7500 Topkick 207/210/230/250/275/300 HP Isuzu 6HK1, the product lookup gives you two useful starting points: the engine-oil grades listed are 15W-40 and 5W-40. 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. Before buying oil, confirm that the product also meets the applicable manufacturer specification.
How often should I change the oil in my 2004 GMC C7500 Topkick 207/210/230/250/275/300 HP 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.
What type of oil does my 2004 GMC C7500 Topkick 207/210/230/250/275/300 HP Isuzu 6HK1 take?
15W-40, 5W-40 is the engine-oil viscosity listed for this vehicle.
What is the oil filter part number for my 2004 GMC C7500 Topkick 207/210/230/250/275/300 HP Isuzu 6HK1?
The oil-filter part numbers listed for this vehicle include P559128-EA.

