Daniel O’Connor

I first used this when driving a tour bus all over the western USA. Never failed to get me going on cold days. After buying my Ram new I decided that this is cheap insurance against failure from the lack of lubricity in ULSD. 81k miles later no failures, no failures to start. Every time I fueled up, I add either the white bottle in winter or gray in summer. Others claim to be better, but over 20 years of experience says I will never change from Power Service.