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Old 11-16-2011, 09:17 AM   #21
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How do i know if its the oil cooler for sure and not the seals?

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Old 11-16-2011, 09:32 AM   #22
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How do i know if its the oil cooler for sure and not the seals?
Have it pressure tested by a radiator shop once you get it off. You need to replace the rubber coolant hoses once you clean the oil out since the oil ruins them.
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Old 02-15-2012, 06:14 PM   #23
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Ordered the oil cooler and seals 250 from the dealer not bad. If someone has experienced this issue, could you tell what kind of product you used to clean out the cooling system? I dont think water will help with the caked on gunk inside the tank.
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Old 02-15-2012, 10:03 PM   #24
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A well used trick over here in the UK is a dishwasher tablet, run to temp and then rinse and repeat then flush with fresh water, sometimes with the hose connected at various points around the car.
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Old 02-16-2012, 03:30 AM   #25
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Ordered the oil cooler and seals 250 from the dealer not bad. If someone has experienced this issue, could you tell what kind of product you used to clean out the cooling system? I dont think water will help with the caked on gunk inside the tank.
Prestone cooling system cleaner, then lots of clear water............

And I really would not put dishwasher detergent in one of these systems.
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Old 02-16-2012, 08:15 AM   #26
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replacing the O rings sounds like a good idea as preventive maintenance.
is there a DIY for this project?
how to i prevent the coolant and oil mixing with each other when removing the cooler?
will draining the coolant will be enough?
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Old 02-16-2012, 08:09 PM   #27
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replacing the O rings sounds like a good idea as preventive maintenance.
is there a DIY for this project?
how to i prevent the coolant and oil mixing with each other when removing the cooler?
will draining the coolant will be enough?
With the smaller coolers (I'm not sure about the larger coolers on the S model) this is not an issue. I did not drain the coolant. I had some clean rags and lifted the cooler straight up after removing the bolts and quickly put the rags under the cooler. Make sure you clean all surfaces before putting the new seals in-place. After you get the cooler re-mounted remove the coolant fill cap and make sure you flip up the coolant bleeder valve to get all the air out of the system (while running the motor), add a little Porsche coolant if needed. This really is an easy job.
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Old 02-17-2012, 11:52 AM   #28
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Prestone cooling system cleaner, then lots of clear water............

And I really would not put dishwasher detergent in one of these systems.
JFP, the Prestone super flush works great and after flushing with clean water a few times I also like to add the Prestone additive (lubricant..?) to the distilled water and antifreeze mix to neutralize the acid from the super flush.


** Remember to open the heater valve all the way...
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Old 04-07-2012, 11:55 PM   #29
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OOOOOOOOOKAAAYYY

finally i tackled my oil cooler project, i took it out and realized that the seals were toast. I replaced it with new seals and a new oil cooler, pretty easy job. same day i did oil change and spark plugs and other stuff

I did the prestone super flush 3 times, then regular prestone flush 2 times and then just water a few times. Its 98% cleaned up now. between the flushes i would run the car for 10 min with the heat cranked, but the fans never blew warm air it was cold air. why is that?

For my final coolant refill i used the audi/vw coolant and mixed it half half. it was 2am and plus 2 outside i drove the car to my house (10min drive) and as i was in my area my engine temp shot up and i turned off the car and glided home.

I popped my trunk and steam was coming out of the cap. whats going on here? been working on the car for 7 hours tonight, now im exhausted and going to bed.
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Old 04-08-2012, 02:14 AM   #30
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ViolaM,

Stating the obvious I guess but you did bleed the cooling system right?
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Old 04-08-2012, 08:17 AM   #31
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I would leave the cap off and start the engine and let the bubbles rise up. In the Bently manual it never told me to actually "bleed" the system. I figured letting the air out was sufficient. Was I wrong?
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Old 04-08-2012, 09:17 AM   #32
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If you do not use a vacuum filling system, yes, you do need to bleed it. Pedro had a pretty good DIY for this on his site..............
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Old 04-08-2012, 02:43 PM   #33
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Looked at my resivour tank and looks like I have more oil again, maybe my
Flush wasn't good enough.

What about the rad, I didn't do anything with that. Is there drain plug there?
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Old 04-08-2012, 02:59 PM   #34
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how I bleed mine...

Viola, after installing the center (3rd) radiator, I connected all the hoses and filled the system, started the engine until the thermostat opens (w/the heater valve open), then turn off the engine.

Then let it cool down, refill again the system, start the engine, let it cool down, refill, repeat, repeat, etc, etc,

It took me all afternoon and a six pack of beer But if you take your time, you will manage to slowly bleed the system.
I never had any issues with it afterwards.

PS, patience, patience.. ha!

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I would leave the cap off and start the engine and let the bubbles rise up. In the Bently manual it never told me to actually "bleed" the system. I figured letting the air out was sufficient. Was I wrong?

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Old 04-08-2012, 09:36 PM   #35
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Ill have to re-do it again, with patience this time :P Also ill take off the front bumper and remove the rad and see how it looks.

i just wanna enjoy it already
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Old 04-23-2013, 11:56 AM   #36
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Its been a while but I haven't fixed this issue yet. I finally dropped it off at the mechanics and they realised theirs some brown gunk on the dip stick.

Its being inspected as we speak.

I've been ignorant about this whole IMS and RMS ordeal thinking it would never happen to me of course. But it looks like it has.


What are my first steps in this matter?
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Old 04-23-2013, 12:41 PM   #37
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if your car is still running then methinks not an ims/rms issue. you have 'intermix' (you can search the forums on this) - a mix of oil and coolant (ims causes intermix by shoving connecting rods through cylinder walls, etc., so not your issue). the oil cooler was a good place to start looking as there is opportunity for oil and coolant to get together if a seal goes bad. as this has not fixed your problem (or perhaps new unit was also bad, or perhaps faulty installation?) that you might have a bad head gasket.

edit: ... or a cracked head or block ...

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Old 04-24-2013, 03:37 AM   #38
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Cracked Bank 1 cylinder head would be what I would look for. I tip my hat to you doing the heat exchanger leg work first, but it was likely to be this from day one.

Now the question is did you displace enouggh oil with coolant to scar a crank/rod bearing, or some cam bearing surfaces in the heads.

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Old 04-24-2013, 09:33 AM   #39
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The shop will check everything out first, if the cooler is installed correctly first and then go from there. Gotta wait...

If only I had a hoist,,,
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Old 05-04-2013, 08:06 PM   #40
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After over a week of waiting for my car to be inspected for this oil/coolant issue I ended up taking my business else where. So Monday I'm seeing a new Porsche mechanic.

I realized today that I have the brown sludge on my oil dip stick, does that confirm a head gasket issue?

Also I only drive my car to the mechanics and back until I resolve this issue. Am I doing any internal damage?

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