Two of our 617's have between 307k and 315k on them and use no oil between 5k changes. The other engines have 170k and 235k....neither of them use any either.....

An engine burning that much has something very bad going on, not too likely that its valve stem seals. When those were in super bad shape on my gasser it only used about 1qt per 750 miles....and on a diesel there is no vacuum, so less gets drawn in in the first place.

2 qt per 60 miles (if accurate) is extremely severe.

If the engine really only has 160k on it, it was either heavily abused, or something else is wrong.

__________________
-diesel is not just a fuel, its a way of life-
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'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)