Guys i'm just curious about the emission test results that you are getting with your 4jg2tc troopers after you started using biodiesel. Mine is a 1999 model with 131,000 kms. Before i started using a 2% mix, the opacimeter reading last year was 0.25K. Early this week, i got a test result of 0.15K without any pipe washing. Are you getting similar results?