Help your 1991 G2500 engine last longer with regular oil changes and lube service. Schedule an appointment now!
Not sure how or where to get your GMC G2500’s oil changed? Turn to Firestone Complete Auto Care! We are experts in car care — not just tires. We know all about motor oil, too. After all, like our maintenance technician Brianna says, “Oil is the blood of the engine. It’s the #1 thing you can do for your car.”
GMC recommends changing your 1991 G2500’s oil at regular intervals. See mileage and month specifics in the above table. Outside of GMC-recommended oil change intervals, your G2500 may need an oil change if your check engine light is on, you hear engine knocking, smell oil inside the car, or see an excess amount of vehicle exhaust. You may also need an oil change more frequently than GMC recommends if you haul heavy loads, frequent dusty roads, go off-roading a lot, or drive at low speeds for long distances. In general, being extra-diligent about oil changes won’t damage your GMC G2500. Each oil change is actually another chance to check and resolve other car issues, such as worn brake pads or tire treads.
Your local Firestone Complete Auto Care has the right 1991 GMC G2500 motor oil: either synthetic or conventional. GMC has most likely outlined either synthetic or conventional as the ideal engine oil for your 1991 G2500. Motor oil reduces friction between engine components, maintain proper engine temperature, and prevent harmful substances from accumulating in the engine. In an oil change service, one of our techs will change your G2500’s oil, replace and recycle the old oil and filter, check all of your other filters, refill vital car fluids, and visually inspect the rest of the vehicle. You can rest assured knowing that we seek to do what’s best for your G2500 by considering your driving preferences, and mileage.
What motor oils are available at Firestone Complete Auto Care? Your G2500 engine deserves the very best, which is why we only stock the best! Talk with a teammate and consult your owner's manual before picking a motor oil. At Firestone Complete Auto Care, you can choose from the following oils: Quaker State® Advanced Durability™ conventional oil, Pennzoil® High Mileage Vehicle® motor oil, Pennzoil Platinum® Full Synthetic motor oil with PurePlus™ Technology, and Shell Rotella® heavy-duty engine oil. There's a reason we carry these motor oil brands. They are tested and trusted. For instance, when tested in taxi fleets across North America, Quaker State was shown to provide 2x more protection than the industry standard.  And Pennzoil? Pennzoil Synthetics feature the capabilities to advance with vehicle technology to offer complete protection for not only the engines of today, but also the engines of tomorrow. For heavy-duty engines, there's Shell Rotella. It's made for gasoline and diesel engines that need to withstand rugged conditions, and is fortified to deliver improved oxidation resistance, heightened performance in extreme temperatures, and increased wear protection. For help selecting the right motor oil for your 1991 GMC G2500, defer to GMC's recommendations.
When the time for your G2500’s next oil change rolls around, you’ll know where to get it. Your nearest Firestone Complete Auto Care has the ideal oil for your G2500’s engine. We’ve got convenient appointment times to take care of you, with the right motor oil at the right price. Find out how much your GMC G2500 oil change will cost by calling ahead. Get professional engine care by making an oil change appointment for your G2500 today. For your convenience, many of our stores are open late and on weekends!
 ILSAC GF-5 represents the latest performance standard set by the International Lubricant Standardization and Approval Committee (ILSAC), a joint effort of U.S. and Japanese automobile manufacturers. Most automobile manufacturers are expected to recommend oils that meet ILSAC GF-5. API SN is the most recent service category issued by API’s Lubricants Group. Oils meeting API SN and the new “Resource Conserving” designation meet all ILSAC GF-5 performance requirements.