1991 Infiniti Q45 Oil Change

1991 Infiniti Q45 Maintenance Schedule

What is the manufacturer-recommended maintenance schedule for a 1991 Infiniti Q45? Find maintenance info for your vehicle.

How Often to Change 1991 Infiniti Q45 Oil

Not sure how or where to get your Infiniti Q45’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, like our maintenance technician Brianna says, “Oil is the blood of the engine. It’s the #1 thing you can do for your car.”

Your 1991 Q45’s oil should be changed according to Infiniti’s recommended oil change intervals. Check the interval for your vehicle mileage in the table above. Outside of Infiniti-recommended oil change intervals, your Q45 may need an oil change if your check engine light is on, you hear knocking sounds coming from the engine, smell oil inside the vehicle, or see an excess amount of vehicle exhaust. You might need an oil change more frequently than what’s recommended by Infiniti if you regularly haul heavy loads, frequent dusty roads, adventure off-road, or drive at low speeds for long distances. In general, being extra-diligent about oil changes won’t damage your Infiniti Q45. In fact, every oil change is an opportunity to diagnose and treat any other issues, such as bad brakes or a failing battery.

What Kind of Oil Should I Get for My Infiniti Q45?

Whether you need high mileage oil, synthetic oil, or conventional oil, you'll find the right 1991 Infiniti Q45 motor oil at Firestone Complete Auto Care. Infiniti has specifically identified either synthetic or conventional as the best motor oil for your 1991 Q45. This oil helps lubricate engine parts, maintain proper engine temperature, and keep harmful substances from building up inside the engine. During an oil change, an auto technician will change your Q45’s oil, replace and recycle the old oil and filter, check all of your other filters, top-off essential fluids, and perform a courtesy inspection on your entire vehicle. You can rest assured knowing that we seek to do what’s best for your Q45 by considering your driving style, and odometer.

Types of Motor Oil for Infinitis

Wondering if we carry the right motor oil for your Infiniti? We carry the best because your Q45 deserves the best. Consult Infiniti's recommendations to select the right  1991 Q45 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 champions. For instance, Quaker State was shown to provide 2x more protection than the industry standard when tested in taxi fleets across the country. [1] Pennzoil is another option. 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 uniquely fortified to offer improved oxidation resistance, heightened performance in extreme temperatures, and increased wear protection. For help picking the correct motor oil for your 1991 Infiniti Q45, refer to Infiniti's recommendations first.

Where to Get an Oil Change for Infiniti Q45

The next time your Infiniti Q45 needs an oil change, you know where to go! Your nearest Firestone Complete Auto Care has the ideal oil for your Q45’s engine. We’ve got convenient appointment times to take care of you, with the right engine oil at a competitive price. Call ahead to find out how much oil changes cost for 1991 Infiniti Q45s. Get professional engine care by making an oil change appointment for your Q45 today. For your convenience, many of our stores are open late and on weekends!

[1] 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.

Oil Change Q&A for Your 1991 Infiniti Q45

  • Should I check my Infiniti Q45 motor oil level? Motor oil lubricates important engine parts. If your oil runs low, these parts can grind together, generate too much heat, and cause your Infiniti Q45 engine to fail. That’s why it’s best to check your oil levels and get your oil changed regularly.
  • Can I change my Infiniti oil on my own? First off, changing your own oil isn’t as easy as you’d think. You’ll have to figure out how to properly dispose of the oil and buy special tools. Having your oil changed professionally can not only reduce the risk of something going wrong during the service, but also help your car perform down the road.
  • Why is my Infiniti exhaust smoke gray or blue? Your engine could be burning oil due to a leak. It may be time for a pro to take a look. The leak could be the result of worn valve seals, damaged piston rings, or worn cylinder walls.

Schedule an Oil Change for Your 1991 Q45

Help your 1991 Q45 engine last longer with regular oil changes and lube service. Schedule an appointment now!