Quote:
Originally Posted by maroonsentra
This is dumb. Oil doesn't even break down in 5,000 miles. Changing before 3,000 is a waste. I have an article on this if you want to see it.
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we have actually been talking about this since 2003? my goodness
and for the record oil does not break down its the additaves in the oil that break down.
there are so many different things that can effect this and changing your oil 3000 miles is safest.
however honda a couple years ago ut out a TSB that said that changing the oil in thier cars every 3000 miles was not needed and they recoment 5000 miles.
problem is that you cant go off that you can only go off the maker of the oil and not the car maker.
I am currently using my 2004 corolla as a test platform for an amsoil xl product tha tadvertises 7500-12000 mile changes
I currently change it at 10k and when I hit 100k I will check remeasure the engine and go against the pre measurments I did when the car was new
oh and changing from Dyno oil to a syn oil WILL NOT produce leaks,this is a myth and I have found it untrue.
however if you do get an oil with a higher detergent concentration then you may clean the crap out that will show leaks that was already there just hidden by gunk.
but if you have an otherwise good car and you switch it at anytime from conventional to synth you will be fine