More lifestyle self-tutoring: the tutor inquires about oil change frequency. I suddenly wondered: Is there a “rule of thumb” for mileage between oil changes? Of course, the manufacturer’s advice for any specific model should be followed. Moreover, newer cars often …

Oil changes: is there a rule of thumb for how often? Read more »

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The tutor implicates the Clausius-Clapeyron equation to explain why combustion is more difficult at lower temperatures. To burn, a fuel must evaporate.1 In colder temperatures, fuel has less tendency to evaporate. For two specific temperatures (T1 and T2), the Clausius-Clapeyron …

Physical chemistry: vapor pressure: why a car may be harder to start in the winter Read more »

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