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Old 03-08-2016, 09:39 AM   #1
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Cooling System Maintenance Time

It's getting warm so I can now go through with the Coolant Flushing I got good advice on in a previous thread.
I will do the preventative items WP, Low temp Thermostat during flush
I did the Expansion tank in December

So What other Cooling System items should I consider with the coolant out?
  • I was thinking 'O' rings in the oil cooler
  • Hoses if I see any signs of wear
  • Hose clamps
  • ????????????

I'm also going to do the AOS in a week or so

I also have to replace a gasket in this Hard for find Part number plate as well
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Old 03-08-2016, 09:53 AM   #2
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Since that oil cooler is known to fail with the resultant intermix, I would recommend changing it now for peace of mind. While it is easily accessible, it is also not terribly expensive. I replaced mine at 85k. Of course I also upgraded to the S cooler.
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Old 03-08-2016, 02:13 PM   #3
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If you are going to take the oil cooler off and don't have an S, I would recommend upgrading to the much larger S oil cooler (Only used brand new oil coolers). If you remove any spring style hose clamps, those need to be replaced. Any hoses with visible damage or that don't flex well should be replaced (there is a TSB on how to identify bad hoses).

When I was under the car I noted some non-critical components that where getting worn, like the foam around the coolant hoses that go to the front radiators, and the plastic clips that go around the coolant hoses beneath the motor mount.

Make sure you only flush with distilled water.

Best of luck with the service,
-Rick
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Old 03-08-2016, 03:46 PM   #4
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Remove the front bumper, separate the A/C condenser & coolant rads and clean out the debris between them. If you can get a low pressure washer to the coils, even better.
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Old 03-12-2016, 06:37 AM   #5
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Check all of the hoses in the AOS circuit particularly the plastic correlated ones as they have a tendency to crack and then drip oil and pull air which upsets the entire balance of the engine.

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