I still have 30 something gallons of Delo synthetic I got for $3.33 a gallon a year or so ago sitting in my basement because I am not sure I want to put it in my 190D which has 320,000 miles and nothing but a small leak from the valve cover gasket, and haven't wanted to put it in our Sprinter as we have been running Mobil 1 in it since we bought it new.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.