Must be doing it's job as both cars are running fine at 140,000 plus miles each

Product works well. Haven’t tried the extended life part as need to change at lesser interval to stay under warranty.

I've been changing my oil every 15k miles and have not seen severe loss of oil nor burning smell this product lasts!

I always use Mobil 1 synthetic for all my cars and so does my family. Great product, never had any issues.

I’ve always used Mobil 1 but this oil holds up longer and I burn less of it between oil changes. We have 4 Volvo’s and this oil goes in all of them

Slightly more expensive, but Mobil 1™ Extended Performance 5W-30 lasts longer with better base oil and great additives.

I use 5w30 extended oil in all my vehicles. I usually charge the oil about 7000 miles, one time went 9000, the oiil was dark but still looked good.

I use Mobil 1 not only in my car but in my lawn mower, garden tiller, edger and generator. Superb protection at a great price.

Let me explain by this: I have two cars; one is a 2006 Infiniti G35 that my wife rides and the other is my daily, 98 Buick Lesabre. my wife does not know anything about the cars. I mostly use Pennzoil but this time I preferred that one. My wife drove the car somewhere and when she came back home asked me: did you fix something on the car? It runs very smooth and silent. I will definitely keep using that oil.

This oil is truly remarkable. I have been using M1 products in my car ever since the first oil change-- I first used M1 SuperSyn, then M1 FullSyn and now the EP. All them are very good synthetic oils and hold up very well the passage of time. I personally use it on a 2014 Nissan Versa with a manual transmission and a 2011 Impala. The cars don't make any hesitation when turned off and then feel very smooth when driving. No oil loss and the oil is always clean. It is very good on this 110F Texas heat. In fact, I have used other oils that claim to be better than M1 (Balboline, replace B with a V) and I got a seized engine due to poor lubrication. Of course, this does not happen to everyone with that other oil, but it has not happened to me again with M1--and I drive these cars way too hard. Same driving habits I always have. Only complaint with this oil is that the bottle needs a better design in order to be poured easier. Other than that, Mobil, you guys are doing a fantastic job.