If you choose to use the factory maintenance schedule and it works for you that's fine.
And with today's cars using emission/'cleaner' burning vehicles we don't need to change the oil every 3000 miles.
How often do we change the oil on many of our older v-8 hobby cars ? Limited street use, a few thousand miles a year. Fair weather driving. No dust storms. Down the drag strip on occasions.
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE
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