Mobil Full Synthetic Motor Oil 5W-30, 5 Quart

In summer, fall harvest or the dead of winter and it's -30° you need a proven reliable oil that will protect your engine, go no further than Mobile Synthetic. I have multiple trucks each with over a 1/4 million miles and still going strong! I have just over 338k on my duramax diesel and it runs excellent! 334k on my suburban, 285k on my 1/2 ton Silverado. It has proven to me after decades of use that I made the right choice. I love the fuel savings created by the synthetic oil. The longevity of oil changes and added lubrication of synthetic oil is unmatched. I strongly recommend that you keep the engine internals clean and safeguard your investment with quality oils and filters.

I run almost anything synthetic in my cars and trucks to reasonable extent. This is a good value oil, even cheaper than the super tech from Wally at this point, so being delivered to my door is an added bonus. I’m running in my 2016 sierra 5.3, don’t care for how loud the engine is on 0/20, I have all the MDS disabled anyway.

Oil pictured is what was delivered

I was a bit weary of buying this oil since it was fairly inexpensive and not something I’ve found anywhere else, but it is Dexos Gen3 tested (which is pretty rigorous) so I decided to pull the trigger. I ran this oil for 4k in my vehicle that I drive upwards of 150 miles a day, constant tough city driving for work and it is still brown. Could easily run it longer and I’m sure it would hold up great. Not bad at all!

Car running great! Works as described.

I am a seasoned mechanic so I've done my fair share of oil changes on many different vehicles and I have never seen an engine react so positively to a simple oil change. My daily driver is a 1999 Toyota Corolla 1.8l 4 cylinder. For the first year I owned the car I used multiple different brands of the same viscosity oil to see if the car reacted any differently to each brand. When I got to this Mobil1 Full Synthetic motor oil I immediately noticed a difference the first start after the oil change. Noticed that the idle was slightly smoother and the engine actually ran quieter. Since I track every tank of fuel in the car to make sure it is getting proper fuel mileage, that's when I noticed the improvement. The car got 65 more miles to an average tank after switching to this oil. That equals to about 2mpg in my application. Needless to say, this car will be getting this oil at every change for the rest of its life. Also started using it in my 1993 Toyota pickup which had similar results.

hopefully it will last, Great Price a day late arriving** Why a 4 star/Thanks

Great quality.