Slow Coolant Loss and Tank Coffee

[BYprodriver]

Originally Posted by everwax

Hi All. First post and first Porsche.

Bought a dark blue '99 986 Boxster 2.5 with 87k on the clock for 4k in mid-June this year. Had to get A/C condensers replaced once I realised there was no air-con (don't ask - top down after picking it up).


I think that about does it. I believe it's not an IMS because that was replaced with an upgrade 8 years ago (service history).

So...

I am concerned about the junk in the reservoir tank and, as I said, would appreciate it if I can get into dialogue with some of you guys with experience of my issue.


In anticipation, thank you guys.

/Mike

The oil is not harming the coolant tank but it is eating away all the rubber hoses in the coolant system that run up to the radiators.

I don't think the IMSB was replaceable 8 years ago in the UK.

[everwax]

Thanks BY...

I know I have an invoice for the IMS in the service wallet. I'll check it out and get back. And thanks for further input. I'm slolwly assimilating this stuff )

[BoxsterSteve]

If there was any IMS servicing done that far back, especially at a dealership, it was likely just replacing a weeping IMS flange.
IIRC, the entire IMSR procedure didn't really go mainstream until about 2009 or so. I could be wrong... Just ask my wife.
Best of luck!

[BYprodriver]

Originally Posted by BoxsterSteve

If there was any IMS servicing done that far back, especially at a dealership, it was likely just replacing a weeping IMS flange.
IIRC, the entire IMSR procedure didn't really go mainstream until about 2009 or so. I could be wrong... Just ask my wife.
Best of luck!

I bet you are right as usual Steve! I had forgotten about that leak prevention procedure.

[everwax]

Just been through the service history and among other parts like the clutch, the IMS was replaced with a modified shaft seal in November, 2005.

[jdraupp]

You are talking about the ims cover and not the bearing then. The early cars had issues with the flange cover leaking and the gasket design was changed. This is the service that is shown, not the bearing itself.

[Jake Raby]

I think that about does it. I believe it's not an IMS because that was replaced with an upgrade 8 years ago (service history).

Nope, that was the IMS flange being upgraded to a triple lipped seal from the original O ring design. This is a common misperception of service records.

8 years ago we had yet to release the IMS Retrofit, and not other product existed prior to our release. Porsche has NEVER offered an IMS retrofit, remember, they are the guys that said the bearing wasn't possible to replace.

Brown gunk is generally linked to intermix, BUT it can occur if the coolant is nasty. Do a coolant change and clean the tank, then watch to see if the gunk reappears.