Before I took the old family car to college, my father loaded the trunk with soft-drink bottles filled with oil, coolant and transmission fluid. Sure enough, my car overheated. Scolding myself for not listening to my father’s instructions, I looked at the engine and saw how well he knew me. The oil cap was labeled Dr Pepper, the transmission stick, Coke, and the empty coolant container, Diet Pepsi. I finished the trip safely.