I got my 03 S last fall. Over the winter I saw a few spots of coolant here and there. I want to take a look at it this week. From what I can tell its coming somewhere from the rear drivers died of the engine. I'm still not super familiar with these engines. Are there parts or areas of these cars that are more prone to leak coolant? Any help would be great!

 

The coolant bottle on the s, and the thermostat on both s and non s...

 

Start here

 

Definitely check the coolant expansion tank. They tend to get hot and split at the seam, causing coolant to seep out over time. If that looks good, check the thermostat housing. They have a tendency to warp over time, allowing some coolant to leak out. If I remember correctly there is a somewhat flat spot under the thermostat housing that should have white residue if there has been coolant leaking onto it.

 

Ok awesome. Thanks for the tips guys. Much appreciated!!!