Help your 1991 R1500 Suburban engine last longer with regular oil changes and lube service. Schedule an appointment now!
Need more info about 1991 GMC R1500 Suburban oil changes? Get the advice you need at 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 having your 1991 GMC R1500 Suburban’s motor oil changed at regular intervals. Check out mileage and month info for your R1500 Suburban in the above table. No matter the mileage, your R1500 Suburban may need its oil changed ASAP if your check engine light is on, you hear knock knock knock coming from the engine, smell oil inside the car, or notice an unusual amount of exhaust. You might need an oil change more frequently than what’s recommended by GMC if you regularly haul heavy loads, frequent dusty roads, go off-roading a lot, or go at low speeds on long distance trips. More frequent oil changes generally won't harm your GMC R1500 Suburban. In fact, more frequent oil changes give our technicians more opportunities to catch and alert you to any issues, like worn brake pads or a weak battery.
Whether it’s synthetic, conventional, or a blend of both — your local Firestone Complete Auto Care has the right oil for your GMC R1500 Suburban. GMC has specifically identified either synthetic or conventional as the ideal engine oil for your 1991 R1500 Suburban. This oil helps lubricate engine parts, regulate engine temperature, and prevent the build-up of harmful substances within the engine. In an oil change service, an auto technician will change your R1500 Suburban’s oil, replace and recycle the old oil and filter, inspect the rest of your car’s filters, top-off essential fluids, and perform a courtesy inspection on your entire vehicle. You can drive easy knowing that we strive to do what's best for your vehicle and take into account your driving preferences, and the number of miles on your odometer.
Wondering what motor oil brands you can find at Firestone Complete Auto Care? We carry the best because your R1500 Suburban deserves 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 champions. For example, when tested in taxi fleets across North America, Quaker State was shown to provide 2x more protection than the industry standard.  Pennzoil is another option. Unlike traditional synthetic motor oils, the Pennzoil Platinum® Full Synthetic line of motor oils with PurePlus® Technology is formulated from pure natural gas, which helps lead to better performance. For heavy-duty engines, there's Shell Rotella. It's expressly designed for gasoline and diesel engines that need to withstand rugged conditions, and is uniquely fortified to offer heightened performance in extreme temperatures, increased wear protection, and better oxidation resistance. Always refer to GMC's recommendations before going with a new or different motor oil for your 1991 GMC R1500 Suburban.
When it's time for a 1991 GMC R1500 Suburban oil change, you know where to go! Your nearest Firestone Complete Auto Care has the ideal oil for your R1500 Suburban’s engine. We’ve got convenient appointment times to take care of you, with the right oil at the right price. To find out how much a 1991 R1500 Suburban oil change costs, call ahead. Get professional engine care by making an oil change appointment for your R1500 Suburban 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.