Maintenance and Fluid Information for 2009 GMC C7500 Topkick 207/210/230/250/275/300 HP Caterpillar C7
For the 2009 GMC C7500 Topkick 207/210/230/250/275/300 HP Caterpillar C7, you will find 15W-40 and 10W-30 in the engine-oil listings. The matching product listings include Heavy-Duty Synthetic Diesel Oil 15W-40, Heavy-Duty Synthetic Diesel Oil 10W-30, 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 oil does my 2009 GMC C7500 Topkick 207/210/230/250/275/300 HP Caterpillar C7 take and which oil filter is listed?
The listed engine-oil viscosity is 15W-40, 10W-30, and listed oil-filter part numbers include EAHD3191-EA, P551807-EA.
How often should I change the oil in my 2009 GMC C7500 Topkick 207/210/230/250/275/300 HP Caterpillar C7?
Use the manufacturer’s maintenance schedule for this engine and operating conditions. The available application data does not establish an exact oil-change interval.

