larshell, sa mga nabasa ko plus the chemrez seminar offered to tsikot.com, 4x4 group, and kotse.com pipol, a 1% BD application will increase fuel lubricity by 32%. How that works, I forgot the details, but 32% is 32% additional! I believe this is based on a bearing wear test that all lubricant additives use to claim better performance using their product.