Changed the oil and rotated my tires this evening after work. Mazda recommends an oil change at every 7500 miles, which is probably OK for someone who is going to trade in that car after 3 years. I hope to keep the car for a lot longer than that, so in the beginning I decided to double that frequency. I change the oil (and rotate the tires while I’m at it) every 3750 miles. That number is hard to figure in my addled mind, so I now use the valve train clatter as an indication of the need to change the oil. Miatas are known for HLA noise and mine seems to show up after 3,000 miles or so. After a few mornings in a row when it takes to the end of the block for the lifters to quiet, I go buy some oil.
Started down, still down.
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