Maintenance and Fluid Information for 2000 GMC Topkick B7 School Bus Caterpillar 3126
For the 2000 GMC Topkick B7 School Bus Caterpillar 3126, 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.
Which oil filter is listed for my 2000 GMC Topkick B7 School Bus Caterpillar 3126, and what is the filter number?
The oil-filter part numbers listed for this vehicle include EAHD3191-EA, P551807-EA.
What engine oil does my 2000 GMC Topkick B7 School Bus Caterpillar 3126 take?
15W-40, 10W-30 is the engine-oil viscosity listed for this vehicle.
Does severe driving affect oil-change timing for my 2000 GMC Topkick B7 School Bus Caterpillar 3126?
Use the manufacturer’s maintenance schedule for this engine and operating conditions. The available application data does not establish an exact oil-change interval.

