regardless of the grade, all of the vehicles i service get mobil 1 AFS. along with a mobil 1 oil filter. these trucks see industrial use in texas summers. lots of towing and lots of idling in the heat. i change oil at 6,000 miles

I only use Mobil. If you don’t wanna use oem the feel assured Mobil 1 at bare minimum meet the same quality and in most cases exceed it. Make Mobil 1 your first choice if it’s not your only choice.

I’ve used Mobil1 products for decades in both gasoline and diesel engine vehicles. I’ve never had an engine failure and mechanics always remark how clean my engine components are.

Use it in all three of my vehicles, 98 F150, 98 Lincoln Mk VIII, 2005 Explorer. Definitely helps keep engine internals clean. Been using this for over 10 years, no complaints

I thought I’d have to at least add oil after a 1600 mile trip. When I checked the oil it was perfectly clean and barely moved. I highly recommend this oil.

I missed out on the Mobil 1 coffee cup promotion because my designated NAPA store wasn't approved, even though they advertised promotion. I will still use Mobil 1, but will not be going back to NAPA.

I've been using Mobil 1 oil exclusively for over 30 years. Its all I've ever used in a new 2003 Mustang Cobra and a new 2010 Harley Street Glide. I change oil every 5,000 miles and the price at Sam's Club makes it a real deal.

I consider Mobil 1 to be the best oil for my vehicles. It is a quality product with the best technology developed over the years and ensures a good running motor for the life of the vehicle. It has always performed great in all my vehicles.

Been using Mobil 1 full synthetic oil for years in all three of my cars. I have full confidence in the product consistency and quality. Now converting my son to do the same with his cars.

I have used Mobil 1 since oil change #1. Now at 170,000 miles the engine still works great. It does not use oil nor has the engine ever required work. Seems like the oil is doing its job.