Using the right motor oil makes a difference. Mobil 1™ motor oils are put to the test in the lab, on the road and on the track – duplicating some of the toughest, most extreme, real-life conditions anywhere in the world. This is also why Mobil 1 motor oil lubricants are chosen by many of the world’s leading auto manufacturers. Mobil 1 is chosen by more than half of all NASCAR teams and is the Official Motor Oil of NASCAR.
Mobil 1 performance means:
- Powerful wear protection
- Superb engine cleanliness
- High-temperature performance
- Cold weather startup
Here are just a few frequently asked questions about Mobil 1.
Q. Why should you consider using Mobil 1 Extended Performance?
A. Mobil 1™ Extended Performance is a synthetic oil designed to keep your engine running like new even during today’s longer service intervals. With Mobil 1 Extended Performance synthetic motor oil lubricants, you get proven protection up to 15,000 miles.
Q. What makes Mobil 1 superior to conventional motor oils?
A. First, the performance of Mobil 1 lubricants is more robust, especially in terms of low-temperature pumping and flow. High-temperature stability leading to protection against deposits is also superior. These attributes translate into less engine wear, which helps keep your engine running like new, and a long engine life. Conventional oils lack the performance of synthetic motor oils in the areas of low-temperature performance and high-temperature oxidation stability. Mineral base stocks used in conventional motor oil lubricants also contain significantly more impurities, such as aromatics and other undesirable contaminants that cannot be completely removed by conventional refining of crude oil.
Q. Is it okay to mix conventional motor oil with Mobil 1?
A. Yes. Mobil 1 is fully compatible with conventional motor oils, semi-synthetic motor oils and other synthetic motor oils, should it be 
necessary to mix them. But the superior performance of Mobil 1 will be reduced by diluting it.
Q. What is the difference between Mobil 1 High Mileage and other high mileage lubricants?
A. Wear protection starts with reducing metal-to-metal contact. According to the industry-accepted Sequence IVA engine wear test, the Mobil 1 family of motor oils offers unsurpassed wear protection. Mobil 1 High Mileage is part of our line of advanced full synthetic motor oils using the latest in additive and base oil technologies.