I've been using Mobil 1 Synthetic for well over 10years. One oil change a year or 10k miles makes the life much easier, and all my cars run excellent - and this includes 3k miles Acura *practically new) or 90k G37...

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

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

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

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.

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'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

My daughter had a 2008 Subaru outback that by design, always used some oil. However a few years ago the timing belt broke and ruined the valves ( another story). after this it smoked and used 1 quart of oil every 1000 miles. I tried everything it just had a lot of blow-by sucking thru the PVC. Just as I was about to give up, the Mobil 1 10w40 oil and the oil usage cut in half. I bought the extended performance oil and she now uses about a quart every 4000miles when I change it. I am not kidding when I say I was looing at rebuilding this motor. at 132000 after getting 2 catalytic converters under the PLEV warrantee of 150,000 miles. Now its as good as new oil consumption wise and im happy to say we have zero converter issues at 174800 miles. Unreal!