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Old 03-19-2021, 07:55 AM
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jay_bob jay_bob is offline
Control Freak
Join Date: Oct 2011
Location: Columbia, SC
Posts: 3,940
At 150k it almost certainly would have had oil cooler seals done by now or it would be leaking like a sieve. 2008s definitely had orange seals.

A few suggestions on proactive things to do with the engine that are not terribly expensive and will save you lots of trouble later. I have two 2008 642s, my two college aged sons are driving my wife and my hand me downs, and these are things I have had to do on both cars (or need to).

- Fuel filter, be sure the hoses are not weeping (had to replace on both cars). Check for fuel accumulation on top of the filter housing. May need to replace the water in filter sensor, it gets a crack in it and starts leaking.

- Oil filter tower, there are 2 gaskets, one against the block and the other in the middle of the neck. The one against the block is available at the dealer the neck gasket is not (they want you to buy a whole new tower) but Dorman makes a replacement neck gasket.

- Belt tensioner and pulleys, it's one of those things that just wears out and will leave you stranded.

- Return hose assembly, another one that will get you out on the road.

- Alternator, had to replace one already and the other is starting to squeak at startup. Get an original from the dealer only, parts store alternators are trouble. Found out the hard way on that one.
The OM 642/722.9 powered family
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)
2008 ML320 CDI (Older sonís DD)
2008 E320 Bluetec (Younger son's DD)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech
gone but living on
1983 240D (body to greazzer, engine to t walgamuth)
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