Have been running colt 2,8 non turbo for 2years ,2 nissan yd25 s bmw 330 d using pariffin and 2,5 % lubricant aditive in Lesotho no problems, actually the 330d seems to be more on the ball, had a bearing go on one of the nissan np300, did a complete overhall sent the diesel pump for service ,was sent back 100% still good that is after 375000kms