What is your question?
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What is your question?
I drive mainly highway miles. 150 K miles on car. How often should I REALLY change oil? I know that old rule was 3,000 miles. I am now doing this every 5,000. Is this ok?

2 Replies
I agree certainly on older cars frequent oil changes is the cheapest way to ensure long engine life. You could change from the recommended 5W 30 oil to a higher viscosity oil say 10W 30.