I have been using Amsoil in all of my vehicles for probably 7 years. And yes I change the oil in my Honda 2006 (268k miles) and Tacoma 2006 (145k miles) once a year. The Honda started when it had approx 65k miles and the Tacoma started when it had approx 75k miles. My reason for going for the extend interval oil change is because we put alot of miles on the Honda, at least 450 miles a week. So I wanted the extend oil change. As someone alluded above, the interior car will wear out before the motor, at least with the 2005 models. This is primarily a function of the motor designed better than the cars of yesterday years. There are alot more high mileage vehicles on the road today and that is a testament to the durability of vehicles today. I have used Amsoil in all of my vehicles, Honda, Tacoma, Rav I will do when the warranty expires, Harley (all three holes except the tranny).
My wife bought a new 2016 Rav last year and the dealer was offering $500 for the Honda. Since I bought this Honda brand new I said hell with it and kept the Honda thinking I can get 300k miles out of it. I have never bought and kept a car for that long so I wanted to try this one. We are driving the Honda to work with my wife driving it 75 miles round trip always but she works from home 2 days a week nowdays so its getting driven less than previously. I work from home and my round trip is 30 miles and drive the Honda if possible and the Tacoma when she drives the Honda. Both vehicles have held up well for the mileage we put on the cars.
As for Amsoil being a gimmick...that is funny. There are millions of vehicles on the road using Amsoil. Right now I pay $16 for yearly Amsoil membership and the cost to buy this synthetic Amsoil is cheaper than Mobile 1 or any other synthetic oil. I will say this...when I change oil in my vehicles I decided to use the Mann/Wix oil filter and if I do put 21k miles on my vehicle starting with the oil change I will swap out for anew filter and top off the oil. So basically I change filter 3 times when I drive the vehicle for 21k miles. I am doing this for peace of mind knowing I have fresh filter to catch dirt from the oil. I have always changed oil myself so this is alot less work for me but if I felt I need oil changed 3x a year I would do it.
Back when I started using Amsoil I researched the feasibility of Amsoil. I found an article where Amsoil did a test of their synthetic oil comparing with others (Mobile, Rotella, Purple) and Amsoil found their oil last well for the heat a motor produces. The article is on the internet somewhere. If this was BS then why do you think Mobile and others did not take Amsoil to court for this kind of test? Why did not Mobile do the test themselves and find out whether this is false misrepresenting their oil (or any other oil manufacture can do this?). I think back in the day...dealerships want everyone to change oil frequently...that is how they make money. This extend interval oil change has gotten the dealer to acknowledge that 10,000 miles is not much different from 5,000 miles per motor degradation.
In all honesty I believe all synthetic oil is superior today and with cars being manufactured to tighter tolerance and made to last, probably any synthetic oil will be good for a vehicle. Me...I change the oil myself and I picked something that can last for extend oil changes. My vehicles have shown this to work for me. And for the record I have never done a UOA but wish I had done it at the beginning. Of course, as they say YMMV...
Do you honestly think a small time blender like Amsoil knows anything Mobil doesnt? For starters botique brands purchase their base oils and additives from company's like Mobil, Shell, etc. They produce nothing other than finished product made from t blending other people's components. With that said do you think Mobil and the other big boys sell them the best components?
It's also worth noting that Amsoil test are often BS. At on they used the four ball test on motor oils. Problem is the test was designed for testing extreme pressure properties of gear oils.
