Mobil1 10W-40 High Mileage Full Synthetic Motor Oil, 5 qt.

Jeep JK runs great and oil tests show minimal wear on a original motor with over 120k mi and loads of offroad terrain.

Don't know why it was so long in getting here, but it is an excellent product.

I use this product in a mid-60's collectable automobile, used per the Mobil 1 engineering recommendation at a seminar per specific question from the audience. Have used it for quite some years now, motor loves it.

Great Oil For NON "Wet-Clutch" Applications.Such Has Scooters (and) MoPed's.That Do NOT Have A Clutch.BUT; Please Do NOT use this in BikesThat have A Clutch.It's A Great Scooter Oil.!!! :-)for anything that requires a 40 weight oil

We use Mobil 1 oil in all if our vehs & motorcycles & have for MANY years. My hubby researches things to the T & refuses to use any other oil.

Have 270K on the Mercedes and it loves this stuff. Get almost the same mileage as when new. Got if for a good price and it's easy to pour with a funnel

Hard to find in stores. Good for 5,000 miles.

The product itself is 5/5, but when Amazon ships the oil in a cardboard box with zero padding to protect the oil container from dents, you get a leaking oil container. The plastic of the oil container isn't as flexible as you might imagine -- I was taken by surprise when my container was leaking oil in the unopened box and I had opened the box and examined the dent. The dent looks like something you'd say "oh it will be fine" but as it turns out that dent has created holes small enough to not see for oil to leak through. Not only that, but I cannot return the item in this condition for a refund as Amazon is requiring return of the item.