I have been using Peak oil and other products for many years as well as the K-Mart brand oil. They have the same National Engineering rating as do the top name brand oils. They perform and protect the same because they are produced to the same engineering specification.
I have used product and I'm very happy with how it performs.
I was looking to buy only a quart of motor oil but saw this 5 quart jug which was just twice as much as buying the 1 quart. I add to keep the oil levels in line between oil changes for my cars and lawnmower. It is also convenient if you like to do a complete oil change yourself.
peak is probably one of the best brands around!! I have been a fan of this company for years. When I first bought their oil I didn't know what to expect. This is my 6th one!!! I truly recommend this company and their quality merchandise!!
My car usually burns through oil like you wouldn't believe. I decided to try 10w30 instead of 5w30 and so far so good. It was a decent price. Let's just hope it lasts much longer than the previous oils I have tried.