Help your 1991 K1500 engine last longer with regular oil changes and lube service. Schedule an appointment now!
Not sure how or where to get your GMC K1500’s oil changed? Turn to Firestone Complete Auto Care! We're experts in more than tires. Oil and lube services are also our specialties. After all, "Oil is the blood of the engine. It's the #1 thing you can do for your car," says our maintenance technician, Brianna.
GMC recommends having your 1991 GMC K1500’s motor oil changed at regular intervals. See mileage and month specifics in the above table. No matter the mileage, your K1500 may need its oil changed ASAP if your check engine light is on, you hear knocking sounds coming from the engine, 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 go at low speeds on long distance trips. More frequent oil changes generally won't harm your GMC K1500. 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 K1500. GMC has recommendations as to whether conventional or synthetic oil is the best oil for 1991 GMC K1500 vehicles. Motor oil reduces friction between engine components, regulate engine temperature, and keep harmful substances from building up inside the engine. During your oil change service, one of our techs will change your K1500’s oil, replace and recycle your used oil and oil filter, inspect the rest of your car’s filters, top-off important fluids, and visually inspect the rest of the vehicle. You can drive easy knowing that we strive to do what's best for your vehicle and take into account your driving preferences, weather and road conditions,
Wondering if we carry the right motor oil for your GMC? We stock outstanding motor oils because that's what your engine deserves. 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 instance, when tested in taxi fleets across North America, Quaker State was shown to provide 2x more protection than the industry standard.  There's also Pennzoil. 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 overcome the strenuous working conditions, and is fortified to deliver improved oxidation resistance, heightened performance in extreme temperatures, and increased wear protection. Always refer to GMC's recommendations before going with a new or different motor oil for your 1991 GMC K1500.
The next time your GMC K1500 needs an oil change, you know where to go! Your local Firestone Complete Auto Care has some of the best motor oil for GMC K1500s. We’ll take care of you and your car at your convenience, with the right motor oil at the right price. Call ahead to find out how much oil changes cost for 1991 GMC K1500s. Get professional engine care by making an oil change appointment for your K1500 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.