Insoluble's and silicon in my oil samples show that the Mobil 1 filters are good to at least 8500 miles so far for my application.Ĭlick to expand.First, congrats for using Oil Analysis the RIGHT way. I also use Mobil 1 filters which they claim to be good for up to 15,000 miles. I usually go two changes before I bump it up another 1000 miles because I want to be on the safe side. I've been working the changes up slowly over the past two years. I'm going to try 9500 this time and see what the analysis says. Blackstone said I could go to 9500 from the analysis I've been getting. I've been going 7500-8500 with Amsoil Signature 10-30 in my 2.7. I just choose to run Amsoil Signature and ring every mile out of it that I can because Amsoil invented synthetics way back in the 70's and I think they know what they are doing. It, as well as others are truly spectacular oils. Not that I'm hacking on Mobil 1 or any other "synthetic". Boutiques like Amsoil Signature and others such as Redline are true 100% synthetic and therefore deliver the longevity and hot/cold characteristics a little better. Pennzoil Platinum is the only pure store bought synthetic. One other thing to remember is that the store bought "synthetics" like Mobil 1 you buy at Wal-Mart are NOT 100% synthetic. That type of usage makes a big difference in how long your oil will last. My Taco also runs pretty much 15 miles on the interstate 5 days a week and only gets off-roaded very mildly maybe 100 miles a month. I don't like doing that type of maintenance any more often than I have to. I do it for the same reason I run Iridium plugs. Using expensive synthetics only pays off if you're going to do analysis and stretch the intervals to the max. Insoluble's and silicon in my oil samples show that the Mobil 1 filters are good to at least 8500 miles so far for my application. Click to expand.I've been going 7500-8500 with Amsoil Signature 10-30 in my 2.7.
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