I have a 2018 Chevy Impala Premier & Chevy Colorado 4x4 4dr both with V-6 engines. I had the dealer drain the original oil and replace it with Mobil 1 5w-30 Oil. Previous vehicles had almost 325,000 miles each and I only used Mobil 1. I am a customer for life.

Started using in Hawaii in 1977 in my 74 Volvo which required manual valve adjustments. Valve gallery stayed clean even with short mileage drives. Kept Volvo until 1986 and engine still ran smoothly with virtually no oil burning. Been using in all my vehicles since 1977. Do not compromise on engine oil; use Mobil 1.

I use Mobil1 5w30 in each of my three cars, an 07 Chevy truck, 01 Corvette track car and an 88 Corvette. I had the track car out this past weekend filled with Mobil1 and it ran smooth and cool all weekend. In fact I’ve never had an oil related issue with any of my cars. And I’ve used Mobil1 exclusively for approximately 10 years. The 88 Corvette was switched to Mobil1 about twenty two years ago and run like a top every time I drive it, which isn’t often anymore. So that car sits around a lot. Great product!

Year after year and well into six-figure miles, Mobil 1 motor oil keeps the inside of my engines completely clean. I am confident that Mobil 1 will allow me to operate these same vehicles reliably for many years to come. As I write this review, we are forecast to have many more days in a row of 100 degrees or more, and I am confident that Mobil 1 will protect my engines through any and all hot spells.

Been using Mobil 1 for decades. Almost considered switching when Mobil 1 was changed from what a consumer thinks when he reads " true synthetic".....to what the government allows to be called a true synthetic. Have two Jeeps with checkered history's in regard to their engines....an '02 3.7 and an original 2012 Pentastar V6 engine ( before the head mods of newer Pentastars). The '02 3.7 supposedly has an unexceptably high rate of catastrophic engine failure because of too small oil channels...that when slightly gunked up...allows too little oil flow and the early Pentastar engines... which before valve guide hardening in newer versions... suffered from premature valve guide wear and failure as a result of heat and substandard lubrication. Hoping that the high detergent content and above average wear protection and reduction of oil breakdown...to make the difference. These engines will put Mobil 1 to the test

I drove for a limo company back in the 80's., and my boss used Mobil 1 in all of the vehicles, even his own personal vehicle. Back then even before the new extended performance oil he would change the oil every 15,000 miles. and never experienced an engine oil problem. I saw with my own eyes, these vehicles go 300-400,000 miles and still be running great when he sold them. i have used Mobil 1 products ever since.

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

I own 3 vehicles. A 1998 Chevy K1500 5.7 Vortec, a 2018 Ford Mustang 2.3 EcoBoost, and a 2016 GMC Sierra Denali 1500 6.2 Ecotec (0W-20). I’ve tested every major brand of motor oil there is on these vehicles and none of them came close to comparing to Mobil 1! I would highly recommend this product to anyone that feels like they could benefit from a strong and smooth engine!

I have a 2001 GMC Yukon XL with 169,000 miles on it. It has been in the family it's entire life and has used only Mobil 1 Full Synthetic. It has never had any engine problems and the engine runs just as good as new. Never will use anything else other than Mobil 1.

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!!!!!