Oil Changes for 1991 Mercedes-Benz 420SEL

1991 Mercedes-Benz 420SEL Maintenance Schedule

What is the manufacturer-recommended maintenance schedule for a 1991 Mercedes-Benz 420SEL? Find maintenance info for your vehicle.

When to Change 1991 Mercedes-Benz 420SEL Engine Oil

Not sure how or where to get your Mercedes-Benz 420SEL’s oil changed? Get the advice you need at Firestone Complete Auto Care! Our expertise goes beyond tires. We know the ins and outs of motor oil, too. 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.”

Mercedes-Benz recommends changing your 1991 420SEL’s oil at regular intervals. Check out mileage and month info for your 420SEL in the above table. Your 420SEL 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, sense an oil smell in the cabin, or notice excess vehicle exhaust. You might need an oil change more frequently than what’s recommended by Mercedes-Benz if you regularly haul heavy loads, drive in dusty terrain, adventure off-road, or go long distances at low speeds. In general, being extra-diligent about oil changes won’t damage your Mercedes-Benz 420SEL. In fact, every oil change is an opportunity to diagnose and treat any other issues, such as bad brakes or a failing battery.

What’s the Right Type of Oil for 1991 Mercedes-Benz 420SEL?

Whether you need high mileage oil, synthetic oil, or conventional oil, you'll find the right 1991 Mercedes-Benz 420SEL motor oil at Firestone Complete Auto Care. Mercedes-Benz has recommendations as to whether conventional or synthetic oil is the best oil for 1991 Mercedes-Benz 420SEL vehicles. Motor oil helps lubricate the engine’s moving parts, 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 420SEL’s oil, replace and recycle your used oil and filter, inspect the rest of your car’s 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 420SEL by considering your driving habits, and odometer.

Types of Motor Oil for Mercedes-Benzs

Wondering if we carry the right motor oil for your Mercedes-Benz? Your 420SEL 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. With so many motor oil brands in the market, why do we carry these brands? They are tested and trusted. For example, when tested on taxi fleets from coast to coast, Quaker State was shown to provide double the protection when compared to the industry standard. [1] There's also Pennzoil. Pennzoil Synthetics are the most technologically advanced, fully formulated motor oils available and exceed current industry and manufacturer requirements. But don't forget about Shell Rotella for heavy-duty engines. It's expressly designed for gasoline and diesel engines that need to survive the toughest working conditions, and is uniquely fortified to offer increased wear protection, heightened performance in extreme temperatures, and improved oxidation resistance. Always refer to Mercedes-Benz's recommendations before going with a new or different motor oil for your 1991 Mercedes-Benz 420SEL.

Where to Go for 1991 Mercedes-Benz 420SEL Oil Change

When the time for your 420SEL’s next oil change rolls around, you know where to turn. Your local Firestone Complete Auto Care carries some of the most reliable engine oils for Mercedes-Benz vehicles. We’ve got convenient appointment times to take care of you, with the right motor oil at the right price. To find out how much a 1991 420SEL oil change costs, call ahead. Get professional engine care by making an oil change appointment for your 420SEL today. Many stores offer extended and weekend openings for your convenience.

[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.

1991 Mercedes-Benz 420SEL Oil Change Questions

  • What can low oil do to my Mercedes-Benz 420SEL engine? Engine oil lubricates moving parts in your engine. If your oil reservoir is low or empty, engine parts can grind together, generate too much heat, and cause your Mercedes-Benz 420SEL engine to fail. That’s why you’re better off checking your oil levels and investing in routine lube services.
  • Can I change my Mercedes-Benz 420SEL oil at home? Changing engine oil at home isn’t as simple as it’s made out to be. You’ll have to buy special tools and figure out a way to recycle the old oil properly. Having your oil changed professionally can not only reduce the risk of something going wrong during the service, but it’ll also help your car perform smoothly down the road.
  • Why is my Mercedes-Benz 420SEL exhaust smoke grayish or blue? You could have an oil leak and have a case of burning oil. It may be time for a pro to take a look. The leak could be the result of worn valve seals, blown piston rings, or old cylinder walls.

Schedule an Oil Change for Your 1991 420SEL

Help your 1991 420SEL engine last longer with regular oil changes and lube service. Schedule an appointment now!