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.

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'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. .

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.

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.

When I was much younger and running hot rods ('66 GTO and a '68 Mustang fastback Bullitt clone) I used GTX 20-50 and it worked ok in those cars at that time. As I have gotten older and, while my taste for fast cars hasn't changed, I now drive something a bit more refined, a V-12 Mercedes SL600 and a smaller V-6 Mercedes SLK320 Sport and I use strictly Mobil 1 5W-30 in both. Both cars run so smooth that at idle , and aside from the blurble of the exhaust system, you cannot tell they are even running. Mobil 1 5W-30 is the factory recommended oil for the SKL320 according to the sticker under the hood. The SL600 didn't have a recommended oil but I use the same 5W-30 in it as well. We also have a Ford Expedition with a 5.4 liter Triton V-8 and I figured that if Mobil 1 is recommended for a Mercedes, it's more than good enough for the Ford, too. I do all the maintenance on all our vehicles, except for any major repairs, and I change the oil and filter every 3,000 miles even though Mercedes recommends oil and filter changes every 10,000 miles. If you have ever owned a Mercedes and had to have major repairs performed at the dealership you know it can b e a rather spendy experience, so I would rather spend a little extra money on oil changes now than on major engine repairs in the future. Mobil, I absolutely love your product!

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.

Awesome purchsse with lowest price

Used this product for oil change on my wife's Camry.

Been using this since the 80’s , always the best , never had an oil related failure