Quote:
Originally Posted by mechman600
On the short commute, the engine and cat do not get a chance to warm up, whereas on the longer commute it does. Just a question to ponder.
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Short commutes are bad on an IC vehicle as well. I know someone that only lived one mile from work, but many days he did not walk because of rain or snow. Because the engine never warmed up, water condensate fell into the oil and turned it brownish after about six months. (he did not have a bad gasket or other leak). Because of this, he had to change the oil more often than he would have liked. The exhaust system is also rustier than one would expect on a relatively new vehicle.
In this case, short IC commute = extra pollution from cold cat and extra oil changes -and probable replacement of the exhaust system much earlier than a vehicle driven on a 30 mile commute.