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Old May 22nd, 2020, 09:57   #1
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Join Date: Aug 2008
Location: Memphis TN
Default Can you Flush and Refill All Coolant from 2010 TDI CJAA Without Removing Hoses?

So I had my system flushed. I was going to do it myself as I do all my routine maintenance (oil filter changes, engine, DSG, fuel, air), but this looked like a big PIA.

I picked it up and it had purple pink stuff in reservoir. So far so good. The price was higher than expected. Don't care as long as I get good service. The shop has always done me right. Going there for over 6 years.

I asked the owner how do they flush it? I was shocked to hear they don't remove any hoses!!!! He mentioned special fitting they put on the reservoir, running it gets to full temp. I asked about using tap water or distilled. The answer was they use a pre 50/50 mix. I don't want to bother them with dumb questions. CAN ANYONE EXPLAIN THIS VOODOO MAGIC. How do you get all the fluid out even with a super fitting and vacuum on the reservoir??? Not sure what they flushed it with, distilled water or a garden hose from the tap.

Can vacuum remove all fluid from the system by reservoir cap?
If they are adding 50/50 then the system has to be empty to get correct ratio?

Please explain? I know from reading the Forums the tried and true DIY method is remove one radiator hose, remove a oil cooler hose and drain. Connect the hoses, refill with distilled water and run. Repeat this over and over until it comes out clean. Last time drain and fill with 100% G13. Since the system can only be drained about half by removing hoses this works out well......

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