No oil manufacturer publishes all the API test results for all their oils with the exception of Amsoil. So why is that, can’t they afford to? Mobil, Castrol, Valvoline and Shell (to name just a few) all spend in excess of 1 million dollars a week in advertising, so I am sure they can afford to list all the API test results on their websites. Or is it just easier for them to spend money on hype than substance.
You do not have to believe Amsoils test results as fact, but understand all the major oil companies do! In the last 20 years every major oil company has sued pretty much all the other oil companies over unsubstantial claims, with only one exception. You guessed it, only Amsoil has not been sued by any of the other oil companies. Why is that, could it be because what they are publishing is correct, and the other oil companies already know it. If Mobil can spend over 50 million a year advertising their oils I am sure they would spend several hundred thousand to sue Amsoil, if they thought there was a real basis for actually suing.
Amsoil has performed numerous fleet test studies over the years. All showing reduced wear, better gas mileage, reduced cost to fleet and on and on. If you are looking for another oil company to do this kind of study and publish it, then you are going to be waiting a very long time. Also all the other oil companies want you, as the consumer, to change your oil and change it often. Not to run it at extended intervals. Almost all the oils Amsoil makes have a 25,000 miles or one year warranty. With oil analysis they will extend the warranty to 100,000 miles. The oil for our bikes is rated at twice the manufacturers change interval or 1 year.
Only Amsoil so far is willing to put up real test results (lab and real world) without all the hype. Bashing Amsoil because they are willing to do something none of the other oil companies are is the wrong approach. Go ask Mobil, Shell or who evers oil you use for their API test results and see what kind of response you get.
Bottom line, it is your vehicle, your time and your money to spend. If you think XYZ oil is great then buy and use it. There isn’t a synthetic oil on the market today that isn’t at least 3 times better than the oils sold 20 years ago.
