BTW, I just recently began using the Lucas UCL in this same truck for the last several tanks. I caught a sale at O'Reilly's and picked up some of their "one shot" type 5.25 oz bottles with the intention to reuse the bottles for dosing with some other adds like Neutra in some diesel p/u truck apps. I've never been a big Lucas fan, but have to say that the UCL made my truck run better/smoother. Has totally quit pinging on the cheaper 87 octane gas, which is something it never did on FP3000, although FP3000 works well, too, and almost stopped the pinging. Maybe a slightly higher dose would have worked, I can't tell yet since I did not try a larger dose than recommended by LC