Hello, my name is Tim Slatkavitz and I am not the type to write to a company abouth their product but I felt compelled to. During the first week of June I was on the Hot Rod Power Tour which started in Cleveland Ohio. On the drive to Cleveland from Massachusetts my car developed an oil pressure problem. Once in Cleveland I had to replace a lifter and I changed the oil but still had oil pressure issues. A friend told me to use Lucas oil addative, I have never believed in them, but I have to say Lucas worked. The car made it all the way from Cleveland to Little Rock then back to Massachusetts. I will now be adding Lucas to the rest of my vehicles. Thanks for a great product.