Didn't know oil was dripping out the side of my oil filter. I had skipped my routine of checking oil, coolant, etc. a couple of times. When I did check my fluids found the dipstick dry.. I couldnt believe it! Ive been fooling around with cars all of my life and this has never happened before. I know wnough to say if it wasnt fir the lubricating properties of Mobil 1 Advanced Formula, I would probably be searching online for a new motor for my Ram 1500. I will use this oil for the rest of my time here on earth. I dont usually write reviews but had to on this one. Btw: added four quarts of oil then found the leak. No oil warning light, no symptoms of oil being that low. Scared the living daylights out of me! Thanks for making such a fine product Mobil 1. Im your new lifetime customer, for sure.

[This review was collected as part of a promotion.] I’ve been using Mobil oil for years in all my vehicles - in my cars, 15w50 in my motorcycles, and Mobil Delvac in my diesel trucks. I’ve never had an oil related problem in any vehicle and have driven some over 100,000 miles. Thus it was a no brainer to choose full synthetic Mobil 5w20 for my newest car. I know that with Mobil quality oil in my car I’ll never have a wear problem. Highly recommended.

[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

Been using Mobil 1 5W-30 in my 2000 Pontiac Montana, which I bought new, since about 30,000 miles and noticed the brown staining from conventional oil at the filler area. The car now has 340,000 and I still use the regular Mobil 1, not the high mileage, and still do not have to add any oil between changes at about 7,500 miles. I do the changes when the Pontiac oil change reminder comes on. When I change the oil, I look in the filler port and the engine is still clean and no sludge can be seen. Engine has never been apart except for the 3.4l intake manifold gasket failure, common on this engine I am highly satisfied with Mobil 1 and use it on my '84 Buick Riviera Convertable and '09 Chevy Avalanche

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.

I came from a large surface coal mining company and we were owned by a major oil company. We were bound to use their motor oils in our equipment. In thirty years of managing the maintenance department and overhauling and repairing all types of engines I can say that while the major oil companies oils were fine, but there is no comparison in the appearance of the inside of the engines with one that has ran Mobile 1. I recently rebuilt the engine in one of my Corvettes that had 150,000 miles on it. The motor had not failed and was torn down to repair oil leaking from both rear corners of the oil pan. The oil pan itself was at fault and no seal had failed. The engine was clean inside and all bearings looked as good as new. It was in remarkable shape and had used Mobile 1 from the factory till its repair. I would never consider any other motor oil in my Corvettes as long as Mobile 1 is available.

I've used this product for 150,000 miles in my Acura TL, the car presently has 235,000 miles on the odometer. I pour the old oil back into the bottle and it fills it right back up to the top. The car doesn't use any oil over the 7,500 mile oil change interval. I use it in lawnmowers, snowblowers, generators, never had an oil related failure. Once I drained this oil out of my lawn mower and forgot to refill it, the engine ran for 5 min with no oil in it. The aluminum connecting rod seized to the crank but no damage to the rings. That's good oil.

I've been using exclusively Mobil 1 full synthetic (5W30 and 5W20) in every vehicle I own and many others that I maintain on a regular basis since my dad taught me how to change oil nearly 20 years ago now. Simply put when performance and protection matter this is your best option for engine lubricant. The wear protection is second to none and you never have to worry about whether or not an OEM will question the oil if there is a warranty issue because this product is better than theirs or is their recommended choice for their premium vehicles. They also have great racing lubricants for protection under the most extreme and demanding of conditions. I am a believer in using this oil if you value protecting your vehicle's engine past the warranty period and want to see vehicles reach or exceed their engine's max service life.

[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 bought this oil to replace old oil in my daughter's 2009 Chevrolet Suburban, 3 days later( approximately 75 miles ). She called me to come help her because she was broke down at the end of the road I live on. I soon discovered the piston sticking out the engine block. Engine oil life is still at 100%. Very DISSATISFIED