Gday folks,
When evaluating the performance of a particular diesel engine oil (not being concerned with cost or other issues), is it valid to compare the oils exclusively on ASTM standard tests? I see that amsoil are forthcoming about their test results and other oil brands, but it does beg the question is this a valid way to evaluate them?
When evaluating the performance of a particular diesel engine oil (not being concerned with cost or other issues), is it valid to compare the oils exclusively on ASTM standard tests? I see that amsoil are forthcoming about their test results and other oil brands, but it does beg the question is this a valid way to evaluate them?