Maintenance and Fluid Information for 2000 GMC C6500 Topkick 200/210/230/250/275/300 HP Isuzu 6HK1
An oil change on the 2000 GMC C6500 Topkick 200/210/230/250/275/300 HP Isuzu 6HK1 starts with selecting the right lubricant. The catalog lists these engine-oil viscosity grades: 15W-40 and 5W-40. The matching product listings include Heavy-Duty Synthetic Diesel Oil 15W-40, Signature Series Max-Duty Synthetic Diesel Oil 15W-40, Signature Series Max-Duty Synthetic Diesel Oil 5W-40. The grade alone is not the whole specification, so check the manufacturer’s requirements before making your selection.
What oil does my 2000 GMC C6500 Topkick 200/210/230/250/275/300 HP Isuzu 6HK1 take and which oil filter is listed?
The listed engine-oil viscosity is 15W-40, 5W-40, and listed oil-filter part numbers include P559128-EA.
Does severe driving affect oil-change timing for my 2000 GMC C6500 Topkick 200/210/230/250/275/300 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.

