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.

[This review was collected as part of a promotion.] I don't think we would ever consider using a different product than this one. The quality is absolutely superb. I have not run into any problems ever with the engines we have used this oil in. We will continue with this product as long as we can.

I have been using various grades of Moble 1 since the early 1980s. This has kept my engines running smoothly with zero engine oil-related failures. Mobile 1 has been used in my Hondas, VWs, Fords, Toyotas, and Dodges. The only reason it was not used in a GM product is I have not owned one in that time. I will continue to use Mobile 1 as it is a brand I trust.

i have used mobil 1 pure synthetic for almost 2 years now in my 2011 chevy hhr and have had no problems ,it has now 74,500 miles on it and doesnt use any oil i dont have to add any between oil changes . i would like to start using the high mileage but it is not dextos approved and after talking with a mobil rep i am going to the extended performance pure synthetic .

I recently changed to Mobil 1 from another synthetic oil in my 1987 Monte Carlo SS. It's got 69,000 original miles, very low for a 29 year old car. What I noticed right away was better oil pressure than I've had before. Not that it was bad, but it is increased. The car means a lot to me, & it's important for me to protect an old engine, even if it has relatively low miles. Seeing increased oil pressure is like a security blanket for me. I will stay with Mobil 1.

This oil does not burn until almost 450 degrees F. Still lubricating when others burn. My Honda 750F with Mobil1 was several bike lengths ahead of friends Honda 750 after changing to Mobil 1. Before they were pretty even. When I sold the bike 21 years later valves still did NOT need adjusting. Looked like new inside cylinder head. Smokey Unick dyno'd Nascar 355 Chevy, went from 303 to 333 hp on the dyno! Just by changing the oil! My Cadillac Northstar 300 hp still is clean inside, gets 30 mpg highway, has 80,000 miles using Mobil1 exclusively. 1978 VW Scirocco engine looked like new inside at 180,000 miles, good compression, was using one quart of oil every 1,500 miles.

[This review was collected as part of a promotion.] I change oil by myself in most of my cars and over the years I've used multiple brands. So far Mobil 1 brand exceeds all of expectations. You can see a big difference in performance when using Mobil 1 motor oil. The engine definately runs smoother. Oil changes are never a problem with this oil. I definitely recommend Mobil 1 oil. It truly stays on top of all the other oils.

I have used Mobil 1 for many years in everything from autos to motorcycles, lawn mowers, snow blowers, firearms, etc. It has generally kept my machines running long and strong. It also lasts at least 2x as long as dino oil. Just make sure to use a proper oil filter for long life synthetics.

[This review was collected as part of a promotion.] Great oil for whatever you're running. The Full Synth formula is long lasting giving you ample protection. Having just replaced my Mobil with this Mobil, I can say it last the last 5 months with no issue, oil is black but still has the hint of gold your looking for to make sure its not getting to dirty or burned. Be getting again in the future.

This oil does what it says it can do. Provides excellent lubrication to the engine and increases fuel mileage. I ran the Mobil 1 5W30 for 15 years in my 1995 Ford Ranger 2.3 four cylinder. I bought it brand new. I changed the oil between 5000 and 8000 miles. But the oil can go longer if it needs to. The oil never let me down. I believe it also helped the trucks battery to last 14.5 years. Because synthetic oil is so slippery that it takes less energy to start a vehicle. Thus making your vehicles battery last longer. And when I owned my Ranger I was living in Michigan. So my truck saw 8 very cold Winters. Then I moved to Mississippi and the truck saw 7 very hot Summers. My trucks engine did great in both climates thanks in part to Mobil 1 5W30. As for engine cleanliness; the 2.3 has an oiI splash plate under the lone valve cover. I scratched off the black paint on it where the oil cap goes to promote to people how clean Mobil 1 keeps an engine clean. No sludge ever appeared on the scratches. Use Mobil 1 with confidence. It wont let you down.