I know something about motor oil. I worked as a driver sales rep for Pennzoil for 6 years. Pennsylvania Crude was once the absolute best; Quaker State, Pennzoil, Wolfs Head, and Kendall were designated 100% pure Pennsylvania crude, no longer. They are all now blends of world oil. Mobil was the first usable 100 Synthetic oil. Once know as the 50,000. mile oil, just change the filter and add a quart. With auto engines of today, I change all of our vehicles in May (summer) 5w30 or 10w30 and November (winter) 0w30 and 5w30 depending on vehicles, to be prepared for cold starts. Don't mess with synthetic blends OR environmental friendly (used re-refined oil). Its your car you depend on it.

I use mobil 1 in everything that is a gas engine

According to my husband is the best oil for automotives

We have always use Mobil 1 oil for our vehicles and saw that Sam's Club had them on sale. We took advantage of this opportunity and purchased 2 boxes. Thank you Sam's Club!

A product with the reputation of MOBIL1 motor oil needs no further review... Unless something goes wrong, but that's not the case here. With the $10 price drop that Sam's occasionally offers, the pricing actually becomes competitive for this 6 quart case of this excellent motor oil.

I use Mobil products in all my vehicles, power equipment, and motorcycle. They've never let me down. As a diesel tech with over 20 years experience and having been born and raised in the trucking industry, I've seen many things. Everything that I've ever worked on which ran Mobil products faired far better than other brands. This is why I trust Mobil and use nothing but. To the public that reads this, rest assured this an HONEST review. There's no pay off or anything of the sort. Thank you Mobil for all the hard work and dedication to a great product!!

My engine needs 5.5 quarts with a new oil filter. With the standard 5 gallon jug, I need to buy a single quart at a much higher unit price. This lets me do my oil change with a half quart left to top off my engine before the next oil change if needed.

Great 👍 purchase happy with the product and great price.

Great Product

Less expensive at WalMart. Same thing.