Volvospeed Forums: Martynj - Viewing Profile

The engine oil cooler lines connect from the passenger's side of the rad, under the engine, into a small oil thermostat located right under the crankshaft pulley. Take a look at these pictures. http://picasaweb.goo...COyrqtbYvfHYIA#
Best way to get to it is to jack up and remove the driver's side front wheel and fold back the bottom of the flexible cover. You will have to remove and replace some rivets. I think only a small amount of oil (not ATF-that is another set of lines on the driver's side of the rad) will come out since the thermostat is located near the top of the oil sump.

There are two problem areas in this job. One is getting the lines out and putting them back in the thermostat. The other is the bolt that holds the bracket on the middle of the lines to the engine. You can take off the clamp that holds the lines into the thermostat, using a Torx socket, but I found it easier to remove the thermostat itself first, in order to get the lines back in without damaging the O rings. I damaged an O ring the first time I did it and had to repeat. The bolt that holds the lines to the engine is hard to reach and I had to use a long extension. The bolt is around 10-12 mm, not sure. It isn't hard to get out but I found it hard to get back in. As cn90 indicated, get new O rings. Be careful removing the clamps to the radiator- open them slightly and pull the whole line away from the rad.