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FAQs for Mobil Clean High Mileage
I'm currently using Mobil Clean High Mileage with good results. Why should I change to Mobil 1 High Mileage 10W-30, which costs more?
Can I use Mobil Clean High Mileage in a vehicle where seal leaks are not an issue?
What is different about these products -- Mobil Clean 5000, Mobil Clean High Mileage, Mobil Clean 7500, and Mobil 1 Extended Performance -- that enables these oils to perform to their specific mileage parameters?
What happens if I use Mobil Clean High Mileage and I have engine problems?
Will the use of high-endurance oils have a positive effect on the environment?
If I go longer between oil change intervals, do I need to change my oil filter more frequently? Or do I need a special filter?
I'm currently using Mobil Clean High Mileage with good results. Why should I change to Mobil 1 High Mileage 10W-30, which costs more?
If your vehicle has been maintained well, Mobil Clean High Mileage represents an excellent choice. However, if you believe your engine may have sludge through less-than-adequate maintenance practices, Mobil 1 High Mileage may be the more suitable selection. Mobil 1 High Mileage helps reduce the sludge that other oils can leave behind which can result in extended engine life.  For severe cases where sludge and other heavy deposits are present, shorter oil change intervals of 3,000 miles are recommended as cleanup proceeds.
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Can I use Mobil Clean High Mileage in a vehicle where seal leaks are not an issue?
Yes, Mobil Clean High Mileage can still be used. The extra seal conditioner may help to prevent a leak later on and will not cause problems in your vehicle.
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What is different about these products -- Mobil Clean 5000, Mobil Clean High Mileage, Mobil Clean 7500, and Mobil 1 Extended Performance -- that enables these oils to perform to their specific mileage parameters?
Mobil Clean 5000 has a boosted level of cleaning performance to help prevent the formation of sludge and harmful deposits and provides outstanding wear protection of critical engine parts during today's longer service intervals.

Mobil Clean High Mileage is designed especially for higher mileage (75,000 miles-plus) vehicles. The product conditions seals to help prevent leaks and provides extra cleaning performance to help prevent the formation of sludge and harmful deposits.

Mobil Clean 7500 is a synthetic blend formulation that includes 18 percent more cleaning agents than our conventional oil to help prevent the formation of sludge and deposits during today's longer service intervals.

Mobil 1 Extended Performance is our premier, fully synthetic formulation with the Advanced SuperSyn System, which provides exceptional oil life. The product's extra performance additives help deliver outstanding engine protection during longer service intervals.

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What happens if I use Mobil Clean High Mileage and I have engine problems?
ExxonMobil stands behind the performance of its products. Should you have a lubricant-related problem, call 1-800-ASK-Mobil. We will investigate your claim and help determine what happened and why. If your vehicle failed due to an oil-related issue, we will reimburse you for the required repairs.
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Will the use of high-endurance oils have a positive effect on the environment?
Mobil Clean 5000, Mobil Clean High Mileage, Mobil Clean 7500 and Mobil 1 Extended Performance are marketed based on what consumers are currently doing -- going longer between oil changes. However, if less used oil is discarded through the introduction of these products, this would represent a positive impact on the environment.
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If I go longer between oil change intervals, do I need to change my oil filter more frequently? Or do I need a special filter?
Continue to change your oil filter when you change your engine oil. Special filters or more frequent oil filter changes are not required.

Mobil 1 Extended Performance Oil Filters provide outstanding performance during longer oil change intervals. Mobil 1 Extended Performance Oil Filters are designed to offer excellent efficiency (remove more engine oil impurities) and high capacity (60 percent greater capacity than conventional oil filters), which make them ideal candidates for longer oil change intervals. (Updated March 2006)


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