The maintenance guide for my 2000 Toyota Tacoma recommends changing the oil either every 5,000 miles or 7,500 miles, depending on driving conditions, but at least every six months. I was wondering why change it at least every six months if, for example, I only drive 1,000 miles in six months? Is there some reason why new oil can last more than six months in it's original bottles in my garage but once I put it in my truck it only lasts for six months? Any thoughts? Thanks
- posted
19 years ago