Lubrizol® 9040 Zer0 Series keep clean performance in FAME containing fuel

The potential for injector fouling occurring in modern high pressure fuel injection systems due to blending into mineral diesel fuel of fatty acid methyl ester (FAME) is currently a widespread concern. This is unsurprising given that a large proportion of diesel fuel does now contain FAME and that there have been many reports of biodiesel induced injector fouling. Indeed, levels of FAME blending in European EN 590 fuel have recently risen to a maximum of 7%. That’s why it’s even more important than ever to ensure that deposit control additives can prevent injector fouling in the presence of `rogue’ batches of biodiesel.

To prove the capability of Lubrizol 9040 Zer0 Series deposit control additive to prevent injector fouling in the presence of problem biodiesel, CEC F-098-08 DW10 testing has been carried out using FAME known to cause injector fouling and power loss in the test. DF-79-07 reference fuel blended with 10% of this pro-fouling FAME resulted in nearly 8% power loss after 40 test cycles. Test curve #1 in the figure below charts this loss of power against engine test cycle. Running the same pro-fouling fuel treated with the revolutionary Lubrizol 9040 Zer0 Series deposit control additive gave complete prevention of injector fouling and subsequent power loss (test curve #2). DW10 test #3 shows power loss increasing again as a result of switching back to the untreated pro-fouling B10 fuel.