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Re: Coolant Reservoir - layered two color liquid Posted by bobc [Email]  (#473)  [Profile/Gallery]
(more from bobc) on Wed, 18 Jul 2018 15:41:07
In Reply to: Coolant Reservoir - layered two color liquid, Name Left Blank, Wed, 18 Jul 2018 10:55:39 Members do not see ads below this line. - Help Keep This Site Online - Signup |
> I know "armchair" diagnostics may not necessarily be helpful
it's true! And as I sit here in my armchair I will confess that the following is worth exactly what you've paid for it :-)
It sure sounds like the top layer is oil that is mixed in with the coolant. Oil of course would float as a layer on top and if emulsified with old coolant, etc it could easily appear "orange" in the reservoir.
Any chance this is residual crap from the failed head gasket? maybe the system was not fully flushed? otherwise I think I'd want to test the current head gasket, maybe with a combustion gas analyzer.
> wondering if radiator (and part of transmission cooling system
> inside it) could have been accidentally damaged
yes certainly possible that the "orange layer" is trans fluid leaking into the cooling system. Though I think it's unlikely that the head gasket surgery could have caused it.
I'd suggest:
- siphon out that layer and put it into a clean glass jar
- flush the cooling system really well with distilled water.
- refill with antifreeze.
let that fluid in the glass jar sit for a few days, and let it settle out. You might be able to identify it.
Best case is that after a good thorough flush you wont have a recurrence. But if you do, you will need to identify the source.
_______________________________________ '08 9⁵ 2.3T SportCombi, Polar White '01 9⁵ Aero Midnight Blue (benched) '00 9⁵ Aero Midnight Blue (rescued) '99 9⁵ Base model, Cosmic blue '00 9⁵ Aero Silver (RIP - transmission )
, Wed, 18 Jul 2018 15:41:07 <-- Viewing This Message
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