I tried to update the subject line in the old thread instead of making a new one, but it wouldn't work for me, and the old thread seems to be dead. So here is the reply from Amsoil. Tell me what you think.
Manufacturers generally base their lube spec's on petroleum products. They
also typically factor in a safety margin for possible use of really low
grade products someone may use. Our synthetic 2 cycle oils are formulated
so that we can tell the customer what is going to work the best as far as
protection versus over-oiling. AMSOIL Synthetic 2 Cycle Racing Oil (TCR) is
especially robust product that requires high heat and high rpm's for proper
combustion. You may feel very sure that our products are very flexible as
far as being able to cover all the mix ratios.
Manufacturers generally base their lube spec's on petroleum products. They
also typically factor in a safety margin for possible use of really low
grade products someone may use. Our synthetic 2 cycle oils are formulated
so that we can tell the customer what is going to work the best as far as
protection versus over-oiling. AMSOIL Synthetic 2 Cycle Racing Oil (TCR) is
especially robust product that requires high heat and high rpm's for proper
combustion. You may feel very sure that our products are very flexible as
far as being able to cover all the mix ratios.