Best High Mileage Motor Oil

As high mileage vehicles tend to have more wear than new engines, gaps between components can form, leading to leaks. As a car engines ages, seals and gaskets have a tendency to dry out, crack and oil begins to burn off between changes. All of this can ultimately contribute to the buildup of oil sludge and deposits in the engine, potentially shortening the life of your car's engine.

High mileage motor oils are designed to include additives that provide better lubrication, help protect engine seals, and prevent sludge from building up. This minimizes engine wear and extends the life of the engine, while ideally improving performance in the meantime.

We've chosen high mileage motor oils from leading companies proven to perform over time and contain all the positive traits we've described above. Price varies quite a bit depending on oil sales at the time as well as your local market, so it's best to simply pick the oil that best suits your needs.

Castrol GTX High Mileage 20W-50

No list of quality motor oils would be complete without a product from Castrol. In this case, their GTX High Mileage motor oil has been formulated specifically for higher mileage vehicles, with a blend of additives that better protects your engine from wear that can occur over time. Read Full Review

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    Why it's best:

    Castrol has firmly established their reputation as a manufacturer of quality motor oils, whether conventional or synthetic. The Castrol GTX High Mileage motor oil combines conventional motor oil with a blend of additives designed to meet the needs of higher mileage cars. These additives include conditioners to help maintain seals and reduce leaks, as well as to fight the buildup of sludge and protect against oil consumption. Overall, this motor oil is designed to minimize engine wear and extend the life of a high mileage engine.

    Castrol GTX High Mileage 20W-50

    Mobil 1 45000 5W-30 High Mileage Motor Oil

    This synthetic motor oil from Mobil 1 has been formulated to meet the needs of higher mileage vehicles, with its blend of additives that help protect your engine from wear. The Mobil 1 High Mileage Synthetic Motor Oil is a good choice for those seeking a quality oil to help extend the life of their vehicle. Read Full Review

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      Why it's best:

      Mobil 1 is known for making quality oils, something which has earned them a loyal customer base. Their High Mileage Synthetic Oil is designed to extend the life of your vehicle's engine life while maximizing performance. This is accomplished through the use of additives that address several of the issues that can come with a higher mileage vehicle including reduction of sludge buildup, as well as conditioning the seals to prevent leaks. If your vehicle has existing sludge build up, this oil can help clean it out although initially shorter oil change intervals are recommended if this is the case.

      Mobil 1 45000 5W-30 High Mileage Motor Oil

      Pennzoil High Mileage Vehicle Oil

      This motor oil from Pennzoil is designed specifically for high mileage vehicles, using a blend of additives to help protect your vehicle's engine from excessive wear associated with sludge build up and age. If you're looking for a solid all-around high mileage motor oil, this is a great choice. Read Full Review

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        Why it's best:

        The Pennzoil High Mileage motor oil has been formulated especially for higher mileage vehicles and their unique set of needs. This conventional motor oil uses additives to protect against the wear that can come with age and improve overall performance. This additives help to keep seals in good shape to reduce leaks, as well as keeping the engine clean and preventing the buildup of sludge and deposits. Oil consumption is reduced, allowing this oil the help your vehicle's engine stay running strong for longer.

        Pennzoil High Mileage Vehicle Oil

        Amsoil Extended Life Synthetic Motor Oil

        The Extended Life Synthetic Motor Oil from Amsoil might not be formulated specifically for higher mileage vehicles, but it’s meant to stay effective for longer periods of time. This motor oil reduces wear and resists the buildup of sludge, making it an excellent choice for a high mileage vehicle. Read Full Review

        Why it's best:

        Amsoil oils are often more expensive and more difficult to find, but many find that they are well worth the trouble. The Amsoil Extended Life Synthetic Motor Oil works well for all engines, although it’s particularly well-suited to higher mileage vehicles due to being designed to stay effective and reduce wear over time. This oil contains additives that allow it to resist the buildup of sludge and deposits, resulting in a cleaner. better-performing, longer-lasting engine. This oil is formulated to go for longer intervals between changes.

        Amsoil Extended Life Synthetic Motor Oil

        Valvoline (VV150-6PK) MaxLife 10W-40 Higher Mileage Motor Oil

        The Valvoline MaxLife Higher Mileage motor oil uses a blend of additives to better meet the needs of high mileage vehicles. Along with preventing leaks and sludge build up, this motor oil can reduce oil consumption between oil changes. Read Full Review

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          Why it's best:

          The MaxLife Higher Mileage motor oil from Valvoline is designed to extend the engine life of high mileage vehicles. This motor oil uses a blend of additives formulated to meet the specific needs of higher mileage cars. This includes helping to prevent leaks by including seal conditioners as well as providing lubrication to reduce potentially harmful abrasion in the engine. This synthetic blend motor oil also includes additives to help prevent sludge and deposit build up, along with helping to remove any existing sludge.

          Valvoline (VV150-6PK) MaxLife 10W-40 Higher Mileage Motor Oil
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          6 comments
          • OilMan OilMan

          I don't know who picked these oils but they are the worst picks for anybody that gives a damn about his classic car GTX is junk and very expensive and valvoline is the worst besides the pissoil as we call penzoil crap. and the ZDD plus is a Zinc additive, just get the oil that has it in there already the Amsoil ZRod, it the main choice for most older car owners like me a 65 Mustang. You'll be real glad you did put the best in.

          Posted on 4/5/2012 11:47 pm | Reply
          • OilMan OilMan

          For older engines and classic cars,some of these engines have a flat tappet cam and you need an oil with Zinc in it. For the best value most classic and antique car owners use Amsoil Z-Rod.High Zinc, high phosphorus formulation that is engineered specifically for classic cars and performance vehicles. Provides extra protection for falt tappet cams, lifters,rockersand other areas susceptible to wear. It has a unique blend of rust and corrosion inhibitors and ensures maximum protection during long storage periods. It comes in a 10W-30 amd a 20W-50 its a full synthetic oil, eventually thats all your going to buy because many oil companies are going that way and more cars are coming through with synthetics and require it. Check oil Amsoil, it the first in synthetics being made since 1972, go to http://www.synthetic-oil-tech.com/1982486

          Posted on 4/5/2012 11:32 pm | Reply

          Smoccann -If you have a weak oil pump, you need to be using a lower viscosity oil to insure that it gets to the top of your engine as fast as possible. I'd go with a 10W40. I'd also recommend one of two additives:- Slick 50 - which will add teflon to the oil, reducing wear, especially in cold starts- Lucas Upper Engine Lubricant - helps insure that the motor oil "sticks" to the upper part of your engine, when turned off. This helps insure that the upper engine is lubricated from the get to.

          Posted on 9/13/2011 11:24 am | Reply

          Patrick -I'm not personally familiar with Shaffers products, so I went to take a look at their web site. Their products definitely look like top quality stuff. My only concern would be that they all seem to be synthetics or synthetic blends. Those don't always do well with older motors, especially worn older motors. Watch your oil pressure.

          Posted on 9/13/2011 11:21 am | Reply
          • patrick patrick

          I think shaffers motor oil is the best for older engines!

          Posted on 9/12/2011 8:09 pm | Reply
          • smccann smccann

          What is the best weight of oil to use if you have a weak oil pump??

          Posted on 3/6/2011 5:41 pm | Reply