Quote:
Originally Posted by Ultramaroon
I pushed my last fill with Amsoil signature series for 4K before I could no longer stand the noise/feel.
I get about 3K using Mobile-1.
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Now THAT's funny. If you do a used oil analysis, you'll see that regular Mobil 1 (not to be confused with Mobil, Alabama) can do well over 6k miles and Amsoil SS and M1 EP can go much farther.
Yes, you should probably the manufacturers recommendation while under warranty (although ask a dealer if they'll change the oil in a car that sat on their lot for a year), but to change it based in taste, feel, color, odor, engine sound, etc. is not based on fact.
There are plenty of uoa's on this forum and I'd recommend looking through them. Some have gone to 10k miles. Of course, you need to make sure your filter can last as long as the oil. If it's OEM, it can easily handle 6-7.5k miles.