Synthetic Oil Study, interesting....
Mar 5, 2005, 11:30 AM
#47
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Originally Posted by slt
Study
This study is still ongoing, but they have already had some intesting findings. Their Mobil 1 study showed the oil lasting 18,000 miles before it needed to be replaced. Even more interesting to me is that they found that engine wear actually decreases as an oil ages a bit. That is to say that your engine actually wears more if you change the oil too frequently. They seem to be finding that 5-10k mile change intervals are more appropriate.
This study is still ongoing, but they have already had some intesting findings. Their Mobil 1 study showed the oil lasting 18,000 miles before it needed to be replaced. Even more interesting to me is that they found that engine wear actually decreases as an oil ages a bit. That is to say that your engine actually wears more if you change the oil too frequently. They seem to be finding that 5-10k mile change intervals are more appropriate.
Mar 5, 2005, 05:20 PM
#49
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My dad always changed synthetic oil vehicles at 5k miles. He always told me to do the same. I never really questioned it because he has a pretty good background in automotives. He still changes out regular oil between 3k and 4k miles but he has sometimes let synthetic even slip to nearly 7k miles before changing it. I have been rather consistent about changing my oil every 5k miles. I take the manual saying to change oil every 3k miles as more a rule of thumb than a standard operating procedure. This study just goes to further reinforce what my father taught me. go dad 
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