OK so I wrote AMSOIL back with this:
Thank you for your information. However, you can understand my concern when I say that I have never heard of an oil that you are able to run for a year without changing. I am one of those people who change my oil every 3000 miles, and to hear that I won't have to change this oil for 35,000 just throws every concept of whats good for my car right out the window. I am having a hard time with this, if it is indeed true, then this is the greatest thing I have ever heard of. Can you actually guarentee that this will not harm my engine if I let it go 20,000 let alone 35,000 miles? Is it simply that amazing? I'm sure that I am not the first to ask this. I hope you can see my concern. Any more information pertaining to this would be greatly apprieciated.
This is what that replied:
From: AMSOIL Technical Services Department
Thanks for taking the time to contact AMSOIL with your concerns.
In response to your inquiry, yes this can be a difficult concept when we've all been taught that the more you change the oil the better. Extended drain interval questions are covered in depth in the FAQ section http://amsoil.com/frequent.htm#extendeddrain of our website. You can also access our AMSOIL warranty http://www.amsoil.com/warranty.htm . For those that don't feel good about extremely long service intervals, we also offer our shorter life XL7500 series oils. The are rated for 7500 miles or six months, whichever comes first.
Thank you again for the opportunity to respond to your concerns. As always, please feel free to contact us again if we can be of further assistance.
Thank you,
Jim Van
AMSOIL Technical Services
Jeff
former 2000 Proton owner
Lehigh Valley, PA