My dad's 300SD was recently under surgery for several things including a new timing chain tensioner, tensioner slide rail, upper guide, valve adjustment, crank pulley bolts replacement, vacuum pump inspection and gasket replacement, water pump replacement, water pump housing gasket and t-stat housing gasket replacements, coolant flush, oil change, AND Oil cooler lines replacement as the car still had the originals.
We took the old lines off, and had them fitted with 3/4" USA style hydraulic fittings....and had matching hoses of (almost) proper length made. They saved the old pipes and brazed the fittings on. The hoses are immense, and made from 750psi rated hydraulic/oil line. The crimps are huge, each line weighs at least a few pounds!
Cost was about 1/2 of new OEM lines and they made them for us in 1.5 hours right here locally, not bad! These should last for-ever!
Some pics:
__________________
-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)