I have used 5w-30 for our 2017 Chevy Malibu Premier 2.0l Turbo, and 5w-20 for our 2015 Chevy Colorado LT 2.5l engines since new. There have been no issues or oil usage on either engine, and the oil comes out in good shape when the oil meter tells us it's time for an oil change.; The oil changes come at 1 year for the truck and aprx. 10 months for the Malibu Turbo., and I feel these are very safe intervals with the Mobil1 Advanced Full Synthetic Oils. Thanks Mobil !

I alway ran Mobil 1 in my Vett. I was on Interstate in rush hour traffic and sucked a giant Target plastic bag up into my radiator. The car overhear! My oil temp went to 329 degrees. I finally got out of traffic and pulled the bag out. I got car cooled down and took it to my mechanic. The heat cracked two spark olugs, but the oil was fine! Changed the oil as a precaution and drove the car for 7 more years. Mobil One is my oil.

Purchased a 2002 Tacoma new, after the 1500 mile brake in, I changed the factory oil to Mobile 1 and now have 230,000 miles on the Tacoma with never an issue with the motor! I now use the high milage Mobil 1. Set for another twenty years with Mobile 1!

Been using Mobil 1 for years now. Ran engine development for Ford Motor. Tested Mobil oils at several different weights along with work to help improve them on the Aston Martin program. Engines were like brand new on teardowns been using ever since. Great oils

Been a fan of a competitor for some time, availability led me to switching to mobile 1. Right away I've noticed smoother operation, which is debatable, but what isn't is the better fuel economy our vehicles have picked up. I'd swear our vehicles have more power and even running the air conditioning we get a 1-2 mpg improvement. So far, I'm very impressed!

I have been using Mobil 1 Synthetic Oil since about 1987 after I installed a remanufactured short block Pontiac 400 engine into my 1976 Pontiac Grand Prix. Prior to that, the old engine -- using conventional oil -- would give that familiar GM "tick" sound of the valve lifters when the engine was started or was running. Mobil 1 was recommended to me by a very good mechanic friend of mine to use on my new, remanufactured engine to get the best performance and life span. After installing the engine and giving it the traditional break-in period, I moved to Mobil 1 and never heard the lifters again. I also noticed that the oil traveled to the top of the engine after start up faster than conventional oil, especially during cold weather starts (i.e.: the lifters sound disappeared quicker or was not heard at all). Furthermore, during extremely cold days, it seemed the engine turned over faster than before when using conventional oil. I attributed it to the superior flow characteristics of synthetic oil at colder temperatures. After these favorable experiences, I was completely sold on Mobil 1 and have been using it ever since for all my automotive and gasoline engine lubrication needs. I also use Mobil 1 for my gear oil lubrication in the differentials of my vehicles. I have even began to use it my riding lawn mower with a B&S 17HP engine. Per the B&S engine manual, synthetic oil can be used in place of conventional 30w oil. I moved to using Mobil 1 and can definitely tell a difference in the way the lawn mower engine runs and responds. If you have not begun to use Mobile 1, I would highly encourage that you do. With the ongoing high prices for automobiles and power equipment, Mobil 1 is one way you can protect your investment and get the maximum life span.

I've had my 1998 Ford F150 with a 4.6L SOHC V-8 since new. I run only Mobil 1 5w30. Drove it 266,000 miles until it blew a head gasket. Where we tore it apart - absolutely NO WEAR - ZERO. Clean inside and no wear. Cylinder walls still had a crosshatch pattern. Crank and cam journals were void of wear and we went back with standard sized bearings. I can provide images of this engine when it was torn down. Mobil 1 for life.....FOR LIFE. Engine is now rebuilt and ready to go back in my truck. Had I taken better care of my cooling system it would never have blown the head gasket. It would have gone way beyond 300,000 miles WITHOUT A REBUILD on Mobil 1.

I've been using Mobil-1 in my cars with confidence since the 1980s. My change interval is 5-6000 miles for mostly in-city, 7-8000 miles for mostly highway, depending on how dirty it is on the dip stick, and I use a new OEM filter every time since I prefer not to take chances with my transportation. IMO, it's worth the extra expense. .

I can't say enough good about the Mobile One synthetic oil. I started using it in my wife's 1990 Astro van and we drove it more than 250,000 miles on the original motor with no major repairs. Also, I bought a 1989 Astro van used with 89,000 miles on it and change it to Mobil one oil and drove the original motor over 365,000 miles. Presently drive a 2001 Astro van with over 400,000 mile, but its on its second engine, with 225,000 on the first engine, second engine with over 175,00 miles. I started using Mobil One because I drove over 3,000 miles a month and it was cost effective to use Mobile One and change the oil every 5,000 - 6,000 miles. I now use the extended oil and drive 15,000 miles to a oil change. I now have my whole family using Mobile One oil.

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