Odd leak

Parrot of Doom

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Was an E300TD, now a Lexus LS400
Chaps, I've awoken a few times lately to an oily discharge from my car, underneath the engine.

Its an odd one, because all the levels I can check are fine. I've ordered a gearbox dipstick to check that, but the fluid is brown/yellow, not red. The aircon is working perfectly, so I doubt its that. Its not dirty oil, and its not fresh diesel. Its not brake fluid or power steering fluid, and it isn't coolant either.


Where does the aircon drain the water it collects? I have a theory that it may be mucky water collecting in the engine undertray, and running off when parked up on an angle. I have had a slight diesel leak for a good few months, and there'll obviously be the odd small drip of oil now and again. That undertray is pretty mucky, the top of it is thick foamy soundproofing, like a sponge.

It only does it on very hot days, where the aircon has been running full pelt.
 

BlackC55

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The a/c drain is positioned just above the gearbox and will run onto the undertray then drip out from there. It may pick up some oil on the way down before it reaches the floor and you see it. Turn the a/c off and see what happens.
 
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Parrot of Doom

Parrot of Doom

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Was an E300TD, now a Lexus LS400
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Thanks, that seems to confirm my suspicions. I'll have to fix that diesel leak I think. Delivery valves for the injectors need new seals :)
 

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