Abstract
Piston top ring-liner situation was simulated using a passenger car engine top ring sliding on a cast iron disk, on a pin-on-disk tribo-tester. Friction and wear control performance of neat PFAD, its ZDDP and dithiocarbamates formulates were evaluated under a severe load (200N) serving condition possible with today/future cars' internal combustion engines. 0.5%(wt) MoDTC, followed by 0.1%(wt) ZDDP separately doped PFAD produced the lowest friction and wear, comparable to a commercial premium engine oil. PFAD can be a "cost-competitive green base oil" in Malaysia, and can be a contributor to the growing global bio-lubricants market.