What is the reason why people continue to choose Blackstone for oil analysis over Amsoil?
During my recent order of UOA kits, the price of an analysis by Amsoil's lab is about 1/2 of what it costs to have one done by Blackstone.
The accuracy of both are probably questionable, so why spend the extra money?
During my recent order of UOA kits, the price of an analysis by Amsoil's lab is about 1/2 of what it costs to have one done by Blackstone.
The accuracy of both are probably questionable, so why spend the extra money?