Give your K3500’s engine a little TLC with routine oil changes. Schedule your next appointment today.
Not sure how or where to get your GMC K3500’s oil changed? Turn to Firestone Complete Auto Care! Our expertise goes beyond tires. Oil and lube services are also our specialties. We couldn’t put it better than our technician, Brianna. She likes to explain to customers that, “Oil is the blood of the engine. It’s the #1 thing you can do for your car.”
GMC recommends changing your 1991 K3500’s oil at regular intervals. Check the interval for your vehicle mileage in the table above. Your K3500 may need an oil change right away if your check engine/oil change light is on, you hear knock knock knock coming from the engine, smell oil inside the vehicle, 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, drive in dusty terrain, enjoy off-roading, or drive at low speeds for long distances. Generally, getting more frequent oil changes won’t hurt your GMC K3500. 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.
Your local Firestone Complete Auto Care has the right 1991 GMC K3500 motor oil: either synthetic or conventional. GMC has specifically identified either synthetic or conventional as the best oil for 1991 GMC K3500 vehicles. Motor oil reduces friction between engine components, keep the engine cool, and prevent the build-up of harmful substances within the engine. During an oil change, one of our techs will change your K3500’s oil, replace and recycle your used oil and oil filter, inspect the rest of your car’s filters, top-off essential 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 style, and the number of miles on your odometer.
What motor oils are available at Firestone Complete Auto Care? Your K3500 engine deserves the very best, which is why we only stock the best! Consult GMC's recommendations to select the right 1991 K3500 oil and talk with a teammate to learn more about our oil options: 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. With so many motor oil brands in the market, why do we carry these brands? They are proven winners. For instance, when tested on taxi fleets from coast to coast, Quaker State was shown to provide double the protection when compared to the industry standard.  And Pennzoil? Pennzoil Synthetics are the most technologically advanced, fully formulated motor oils available and exceed current industry and manufacturer requirements. 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 increased wear protection, heightened performance in extreme temperatures, and improved oxidation resistance. For help picking the correct motor oil for your 1991 GMC K3500, refer to GMC's recommendations first.
When it's time for a 1991 GMC K3500 oil change, you know where to go! Your local Firestone Complete Auto Care carries some of the most reliable engine oils for GMC vehicles. We'll take care of you quickly, with the right oil at the right price. Call ahead to find out how much oil changes cost for 1991 GMC K3500s. Let the experts take care of your K3500’s engine by making an oil change appointment 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.