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Are there any common places/hoses where it tends to leak from?
Depending on age/mileage of car, it could very well be a cracked radiator. That seems to be the most common issue (plastic tanks) Hoses seem to be fairly robust, but there are a couple small diameter hoses on the throttle body that could develop leaks.
Time to open it up and take a good look around. You'll find evidence fairly quickly as to where the leak emanated from.
I don't think so. It wouldn't surprise me that many of the water pumps in our LS430's weep to some extent. It's what it is designed to do. Here are a couple of pictures I took while changing out the timing belt and WP last fall. IIRC, for the most part, the mass of coolant in there was pretty dry. The drops of coolant that you see are from draining some of the coolant out of the car. I also was poking at the stuff before taking these pictures...
I don't think much coolant weeps out at any given time, perhaps a drop(s) at a time and it probably evaporates rather quickly since I assume it's happening when the engine is pretty hot. And the fact that it's pretty buried in there might be the reason why you don't smell it.
Another leakage point I've come to discover is the overflow tank. At least according to the pictures of mine when I removed my radiator when I was changing out the timing belt. I'm not quite sure of the leakage path in this case...
Thank you for sending a picture of your coolant reservoir. Would you mind making a sharpie line on it, and rechecking the level (when car is cold) a couple times a couple weeks apart, or whenever you want?
05-15-18, 10:46 AM
