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YOUR RESEARCHCoolant recommendations
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Replace audi at 100,000
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Leading evidence: 'Replace audi at 100,000' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check math though' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
I used the Pentosin Pentofrost SF from OReilly auto parts.
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Suggestion
I've used Evans in other cars , works great in internal corrosion prone 1990s VW wasserboxer engines and it's recommended by a lot of Porsche specialists , they use it in the csr cars too
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Used it many times in my Passat when I had a massive leak at one of the coolant flanges and topped it off when I fixed it too.
I have a new to me 03 C4s, going to flush coolant, which coolant is best for these cars? Seems to be two options #04330149 which i believe is the green /yellow stuff or # 04320378 which I think is the pink stuff?
I got the G13 (Replaces G12) coolant from the VW dealer. There is now an equivalent generic coolant at the local parts store named OEM or something like that. Used it many times in my Passat when I had a massive leak at one of the coolant flanges and topped it off when I fixed it too. Has been running fine with that so that might be an option for the 996.
Fluid capacity of the coolant is 5.95 US gallons or 22.5 liters. Use the Porsche (pink) stuff. You can never get 'all' of the fluid out but I did come pretty close by disconnecting hoses in the front, middle, and back of the car. I used an AirLift style vacuum refiller (you will need an air compressor) and it was totally worth it.
It's always good to have a friend stop by with coffee.
Doing the math....how is that cheaper?
@ 22.5 liters you would need 15 bottles...@ $12.99/bottle that's $194.85, this is if you don't mix it 50/50 with water..
if 50/50 mix..you need 7.5 bottles...@ $12.99/bottle that's $97.50
Porsche brand is $30-35 per gallon...need 3 that's $90-105.
where does the "much cheaper" apply?
I bought Evans waterless coolant
http://www.evanscoolant.com
, I ordered a low temp thermostat and a new water pump . I've used Evans in other cars , works great in internal corrosion prone 1990s VW wasserboxer engines and it's recommended by a lot of Porsche specialists , they use it in the csr cars too
https://rpmtechnik.co.uk/csr-conversions/
No , but then I don't live in Phoenix .
I went with it because it's supposed to reduce hot spots and have a more uniform cooling , this should reduce the risk of bore scoring .
I use prestone universal on all my cars. Just add for top ups. Actually talked with prestone and the said it is fine. Did the oat/host research and it makes sense. Use on my BMW with 185,000 miles, Audi with 1750,000 miles, excursion with 230,000 miles, and Grand Prix with 155,000 miles and never a problem. Will use in my 997 when/if needed.
I've successfully used the violet Rowe AN 13 coolant - its basically G13 and backwards compatible and works great in Porsches. A lot of people in Europe use it. Whatever you use, make sure you dilute it only with distilled water!
https://www.vividracing.com/catalog/...151410679.html
The color of coolant is no longer relevant, and was always just a dye added. Antifreeze is clear, naturally. Most types come in all colors these days, due to some bad decisions by manufacturers around the turn of the century.
What is the chemical makeup of the Audi/VW G13, G40, and Porsche coolant?
The Evans stuff seems to require a full drain of the system, as well as drying it out and replacing the radiator cap? I'm still not sure I believe that the higher boiling point is actually reducing hot spots due to localized boiling of normal coolant. It's not like major car manufacturers have never heard of the stuff. Wouldn't they love a lifetime coolant fill?
Interesting history of the various coolant types:
https://www.hemmings.com/blog/2014/0...of-antifreeze/
Weird website with seemingly valuable information that essentially claims that Amsoil coolant is POAT and compatible with
everything
:
http://www.engine-performance-online...ifreeze-types/
For how many years/miles did they have the Prestone in them?
"Lifetime" means "we're not gonna eat the cost under warranty". Newer long-life HOAT and POAT coolants seem to claim 5+ years.
The equation changes for people who drive their cars for 2 years, 5 years, or
decades
.
