I always go to extreme measures when I work under the car. I prefer to have the wheels on ramps I made by just screwing together 10 pieces of heavy boards (so it is entirely solid).....or I use multiple 6-ton or 3-ton jack stands....in various places. I also chock multiple wheels.
Can never be too paranoid when working under a 2-ton vehicle! 
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-diesel is not just a fuel, its a way of life- 
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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