Quote:
Originally Posted by OldGuy
Very interesting analysis. I would self-impose a 12 month timit, though, of maximum between changes though, irrespective of how few miles. I'm sure you would agree.
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I do agree. I would say twice a year. Only reason I know is from the fire department, where we purchase the actual 55 gal. drums of oil. Those things have been sitting around for years, and we still use them on our rigs. Keep in mind, our application is usually much more intense than the average Z driver... Start up and run them hard, and shut them off. Granted, you probably wouldn't want to treat your Z like we do to the fire trucks, but you get the point, heavy abuse, and old oil have yet to make any type of signifcant impact!
