Oil/coolant mixing

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Proceed as follow in the case of the complaint "Coolant in the engine oil": If coolant has entered the engine oil as a result of a leaking oil cooler, all guide and tensioning rails must be checked. Damaged and well worn rails must be replaced.

Fig 1: Identifying Guides And Tensioning Rails (1 Of 2)
Courtesy of PORSCHE OF NORTH AMERICA, INC.

Fig 2: Identifying Guides And Tensioning Rails (2 Of 2)
Courtesy of PORSCHE OF NORTH AMERICA, INC.
The connecting-rod bearings must always be replaced.

Fig 3: Identifying Connecting-Rod Bearings
Courtesy of PORSCHE OF NORTH AMERICA, INC.
Inspect the bearing shells of the crankshaft for scoring and replace if necessary
Check the camshaft bearing, replace cylinder heads if necessary.