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Originally Posted by Brian Carlton
I suppose that it all depends on how long you wish to keep your engine running prior to a rebuild. You can be very sure that dino oil has deteriorated somewhat over the first 5K miles. The engine wear between 5K and 7.5K is going to be higher, but, I cannot say, with any certainty, how much.
I'm quite sure that the engine will last for 125K, as a minimum, following changes at 7.5K.
More than that???  |
I have to find the article but one guy was making the case that your oil is optimum @ 2000-5000 and changing it @ 3000 might be less beneficial than changing it @ 5000.
During the winter when there's no dust or heat I can live with 7500 but no more than 5000 during the summer/early fall.