What is the difference in Mobil 1 Extended Performance?

You can return most new, unopened items fulfilled by Amazon AU within 30 days of receipt of delivery for a replacement or full refund of the price you paid for the item if you change your mind - see About Replacements and About Refunds.

In some cases, the nature of the item means that it is non-returnable, for example, due to hygiene/health and personal care/wellness/consumable nature of the product. In some circumstances, these items may be eligible for a refund or a replacement (for example, if you receive the wrong item due to an Amazon AU error or if the item is faulty). Please Contact Us and see About Items That Can’t Be Returned.

New electronic items fulfilled by Amazon AU can be returned for change of mind, for a replacement or a full refund of the purchase cost of the item within 30 days of receipt of delivery.For information about returning faulty electronics please see Returning Faulty Items.

Unless otherwise stated, original shipping fees for change of mind returns are not refunded. This change of mind return policy is in addition to, and does not affect your rights under the Australian Consumer Law including any rights you may have in respect of faulty items.

To return faulty items see our Returning Faulty Items policy.

For items ordered on Amazon.com.au from a seller that fulfils and ships its own inventory (also called a third party seller), any returns will be in accordance with the returns policy set by that seller (not the Amazon AU returns policies). Please see About Marketplace Returns & Refunds for details on Seller returns policies.

Please see our Amazon Global Store Returns policy and Refunds policy for more information about returning Amazon Global Store items.

Mobil 1 synthetic motor oil is designed to work with the widest range of engine types, sizes, and performance levels. It’s important to reference your car’s owner's manual when determining proper weight and viscosity levels.

How often do I need to change synthetic oil in my car?

Mobil 1 synthetic motor oil is made to last and perform at the highest levels, but no engine oil can last forever. Factors like driving style, length of commute, and even climate can all play a part in determining when to change your oil. Always follow the maintenance schedules laid out by the owner's manual and your car's manufacturer.

Does synthetic oil last longer than conventional oil?

Yes. Synthetic motor oil contains key refinements and additives that conventional motor oil simply does not have. These important changes maximize the oil's performance, heat protection, lubrication, and lifespan.

The sludge problems often don't show up at first. It's only after a number of years or miles into the real world environment that the issues show up. If every engine ran as well as they did when brand new there would be no reason for products such as AutoRx. VW a couple of years back sent letters out to all 1.8T Passat owners advising them that from now on they needed to start using VW approved synthetic motor oil. The factory advised OCI is now 5,000 or every 6 months. At the same time VW changed the recommended size of the oil filter to slightly increase the oil capacity. Many of us who'd been using synthetic all along decided to do an AutoRx treatment or two just as a precaution. 10,000 mile recommended oil changes from the manufacturer are nothing new. Only time will tell if following that recommendation is right for the way you operate your vehicle. I've almost always gone with a 3,000 OCI for my '89 Toyota truck. Toyota's recommendation was 10,000 normally, or 5,000 if you operated under severe conditions. Even with 3,000 OCI I've still got a need for Auto-Rx. At what point did the sludge start to build up? That I couldn't tell you. I can only speculate that had I gone with the factory recommended 10,000 OCI I'd have a much worse problem or it would have shown up a lot sooner.

Quote:

---

quote:

---

Originally posted by TR3-2001SE: I think for changes up to 6000 miles the regular M1 is fine in almost every application. If you like to go longer then the EP is worth the extra money. Probably good for 10,000 to 12,000 in most applications and 15,000 if your engine is easy on oil. Just my 2cents worth.

---

Only 6000 miles on Mobil 1? Most any ordinary dino should be good for that long in most applications. When M1 came out 30+ years ago, it was said to be good for 25,000 miles or one year, just like Amsoil claims now. I, personally, used Mobil 1 in my primary car for about 25 years, until I retired. I always changed once a year, usually at about 18 to 20,000 miles. My engines always stayed smooth and quiet up to the 140,000 miles which was the longest I ever kept a car. That was seven years, plenty long to stay in the same car. Some where along the line, Mobil dropped the 25,000 mile claim; I heard it was due to people ruining their engines by not checking their oil for 25,000 miles and running out. As I have asked repeatedly, what did Mobil do to their EP that made it only good for 15,000 miles?

---

Is Mobil 1 extended performance better than high mileage?

What is the biggest benefit to Mobil 1 extended performance?

What does extended performance mean?

What does extended performance oil do?