ZPlus, LLC is a company formed by classic car enthusiasts to meet the needs of classic car aficionados.  We have seen that the automotive industry in general is changing in response to the environment and financial pressures of today, with little concern for the classic car industry.  We are engineers and automotive technicians by trade, and bring many years of problem solving experience to the task of keeping our classic cars operational and running better than new.  We hope one of the solutions we have designed for our own use will meet your needs as well.  We have developed ZDDPlus™™ to address the need of classic car owners for oil that will meet the specifications of the original oil for which their engines were designed.