Yellow Oil Leak
08-02-2018, 12:30 PM
#16
Rennlist Member
Mike: I have the special tool to get the clamps on/off and have the vacuum system to fill the coolant system, makes it a breeze. I bought the Pentosin coolant from NAPA it's the same stuff as the factory. You are welcome to use the tools or even come over and do it in my garage if I can find time, the deck is coming along!
I agree, I know the Porsche coolant is the “safest” to use when I’m doubt about which coolant should be used, but any top quality coolant that meets specifications should work. I’m sure the Porsche coolant is just a rebranded coolant anyway.
08-02-2018, 12:39 PM
#18
Rennlist Member
I’ve also heard that OEM-style clamps are the best and to avoid the screw-type clamps because they put pressure near the clamp and everntual cause leaks or break any plastic near that joint.
08-02-2018, 12:42 PM
#19
Agreed. Plus the screw clamps become loose as the hose rubber compresses over time. The spring clamps just keep steady clamp pressure. Found this out on my Hyundai when changing a t-stat. I made sure I have plenty of the spring clamps on hand.
08-24-2018, 10:25 PM
#20
Rennlist Member
So I was wrong about where the leak is coming from. It’s actually coming from what looks like a T right on top of the engine in the best possible place it can be. What hose is this?
08-25-2018, 01:17 PM
#25
Rennlist Member
08-26-2018, 01:35 PM
#26
Rennlist Member
This is the one that's leaking. This hose leads directly to the bottom of the reservoir, correct? Then it has a T splitter and continues onto another T splitter before expanding to a larger pipe that connects to the bottom of the engine (presumably the water pump)? This is the part number I think it is: Part #: 996-106-850-05-M100
Last edited by Mike Murphy; 08-26-2018 at 01:38 PM. Reason: added part number
09-04-2018, 11:23 AM
#28
Rennlist Member
My 2000 996 is leaking a yellow fluid at the far rear corner of the vehicle (driver's side). The fluid looks like it could be coming from the area of engine mount, but I can't see or feel the source. The fluid is a clear yellow oil. After a recent drive, a couple of drops ended up on the garage floor, just above the exhaust tip (there is also some visible fluid on the exhaust tip and heat shield). The exterior of the water pump and coolant tank are dry, so I don't believe either is leaking. I've only owned the car for 6 years, and as far as I know, the engine mounts are original (I have the telltale gap between the exhaust tips and body > .75").
Does anyone know the color of the fluid inside the engine mounts? If it's yellow, it would help me confirm that the engine mount is the source. Otherwise, I'll start removing components for better access to see if I can locate the leak.
Thanks!
Adrian
Does anyone know the color of the fluid inside the engine mounts? If it's yellow, it would help me confirm that the engine mount is the source. Otherwise, I'll start removing components for better access to see if I can locate the leak.
Thanks!
Adrian
10-16-2018, 04:52 PM
#29
Rennlist Member
This is the one that's leaking. This hose leads directly to the bottom of the reservoir, correct? Then it has a T splitter and continues onto another T splitter before expanding to a larger pipe that connects to the bottom of the engine (presumably the water pump)? This is the part number I think it is: Part #: 996-106-850-05-M100
Whew, complicated....
08-02-2019, 12:43 AM
#30
6th Gear
Thread Starter
Sorry for the slow reply, but posting this note to close out my original post. What started out as a few drops on the garage floor, eventually turned into a small puddle. It turned out to be the typical coolant reservoir leaking. My coolant mixture is yellow. When it was on the garage floor, it felt so oily that I didn't originally think it was the coolant. Anyway, I finally got around to fixing this. I did lots of searches and found a lot of good advice. I did the standard steps: remove air box; remove air pump; disconnect all hoses to reservoir; disconnect two fuel hoses at the fuel rail (making sure that I "backed up" the fitting when loosening the nut); and did a partial engine drop (I loosened engine retaining nuts at end of engine mounts to the end of the screws, but didn't take them off completely, which gave me enough room to get the tank out). I'm in the process of ordering a new tank (man, tanks for MY 2000 are expensive!). Hopefully it will all go back together smoothly. Thanks for the input to everyone.
Adrian
Adrian
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Mike Murphy (08-02-2019)