Mobil1 5W-30 full synthetic with Dexos SN Plus is really an amazing motor oil. I tried it in both my Mercedes sedan and wife's GLE. It works much better than whatever 5W-40 the dealership had been putting in before. I noticed my engine heat gauge runs 1 tick mark lower that where it usually is and gets slightly better fuel economy.

Been using Mobil 1 in all my vehicles since 1980, the only exception being my old 2001 Ram Cummins and I ran 15w-40 Delvac in that for the entire 250K miles I owned it. Currently using Mobil 1 5W-20 in my 2017 Ram Hemi with a Mobil 1 filter and changing every 10K miles. I have the Mopar lifetime warranty on this truck and at 59 may be my last new truck. Hoping to get 500K on this engine and I know with Mobil 1 it will be possible!

I have 345,000 plus miles on my 2007 Nissan Altima se, which was put in when my car first hit 10,000 miles!, this oil is second to no other as my car purrs like a kitten even after running my car with no oil on the dipstick several times, I do not recommend doing that but my belief is if I had anything but mobile 1 in its crankcase, that I would of been shopping for a new car, thanks mobile 1 , jerry b.

This week we had to take the valve covers off my 2002 Jeep Grand Cherokee Limited. Finally had a valve stick & kick off a rocker arm after 250,000 miles. I bought this Jeep in 2007 with about 50,000 miles on it, & since then it has had nothing in it but Mobile 1. When we took off that valve cover, the cams & all still look new! No gunk anywhere, just clean oil soaking everything. Thank you Mobile 1 for keeping my Jeepy running to a quarter million miles, & longer after we fix the current issues ;)

[This review was collected as part of a promotion.] I changed my oil to Mobil 1™ 5W-20 in my truck. I have a Toyota Tundra that I use very heavily. I hadn't used this oil in the past. Once I changed the oil I could almost immediately feel and hear the difference. This oil is super smooth, and my engine purrs. If you need a great oil, great protection for your beloved car or truck, this is the oil for you.

I read here from one gentleman that the oil was not lasting as long as advertised. The new cars today have an antilogarithm built into the cars computer that calculates the life of the oil based on your driving habits. If the manufacture based their computer model on conventional oils that is the reason this person is being told to change his oil so often. The computer does not know what type of oil in is the engine. Being a retired reliability engineer, I used to test peoples engine oil and Mobile 1 lasted the longest of any oil we tested. It was not uncommon for the oil to still test good after 15,000 or 20,000 miles. At this point the limiting factor was not the oil but the oil filter. Me? I use just the basic mobile 1 products for my vehicles and a premium oil filter. I change the oil every 10,000 miles regardless of what the computer tells me. Wife has over 100,000 miles on her Rav4 and the engine looks so clean on the inside you could probably eat off it. Looking to keep it another 100,000 miles.

I was a firm believer in this oil and was very proud to tell people I was a user of Mobil 1 full synthetic! That is until I recently got a bad lifter tick and pulled the valley and valve covers off of my 2003 5.3 liter Silverado and seen the god awful gunk build up! It was unreal! Definitely not what I was expecting after spending good money on what I thought was great oil. I would not go over 6,000 miles between oil changes. I have built a fresh 5.3 and I will be using AMSOIL!!!!!

The oil pump went out in my 06 C6 corvette. I always use 5w30 Mobil 1 extended. Long story short, there weren't any shavings or glitter in my oil pan. I just got the car running again and it runs great. No bearing damage no crazy sounds. Thanks for oil that may have prevented a $7500 rebuild.

Ever since a friend introduced me to extended wear oil products from Mobil 1 I've been loving only having to change my oil once per year. Be sure to check it once a month in case you have to top off if your engine burns a bit of the oil, but otherwise if you're under 15k miles per year on your car like I am, no need to change it 2-3 times a year, once will do. I've been using this oil for most of the 11 years that I've owned my 2003 Suburban (and my VW Jetta, Toyota Corolla, and Hyundai Elantra -- rest of the family). I have over 100k miles in all of my cars (almost 200k in a couple) and they all purr like kittens. Feel confident in using this oil once per year

[This review was collected as part of a promotion.] I can't say enough about Mobil 1 it's always a great oil and the 5w-20 weight is no exception to that. It just looks like a great oil when your pouring it. It always looks just as good during oil changes to assuming you do them regularly. Very pleased with this product