The question was if base viscosity was an all important factor in how well an oil (in this thread specifically meaning how an oil performs in a 2 stroke) performs as you stated it does. Why were the test results not in order of viscosity? Stating that an oils base viscosity is directly related to how well it performs is your position, feeling or opinion. Now if you stated that VI (viscosity improvers, alas add pack stuff) was the most important factor in how well an oil performed, that may be factual. Julian’s tests were cut time/performance related, Steves were longevity/duration tests, neither concluded that base viscosity was an indication of how well an oil performed.