y'all, i need a little help here.

can anyone share with me a good way to get set up for pressure testing the cooling system on a om602 turbodiesel please?

loosing coolant at an alarming rate. Don't see any obvious signs of where the coolant is going.

Thanks

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"