JimR

A couple of weeks ago, I pondered whether Prestone's silicate-free extended life product would be a replacement for Pentosin. Here's what Prestone had to say about that:

<i>Hello James:

Thank you for your inquiry and your interest in our products. In answer to your question, "Is your new Prestone)
Extended Life 5/150 Antifreeze/Coolant an approved replacement for Pentosin for Audis?" We appreciate the opportunity
you have given us to answer this question for you.

Prestone GM/Dex-cool Approved Extended Life Antifreeze Coolant is approved under GM 6277M Specification and
compatible with Audi Coolant Antifreeze (Part # ZVW 237 G12) based on ASTM D 1384 and D4340 testing. We recommend a full
changeover entailing draining, flushing out old coolant and installing Prestone Extended Life antifreeze exclusively.
Doing so will ensure peek performance and the longest life. We hope this has been helpful. If you need additional
information please let us know.

Prestone, </i>

FYI

JimR

<ul><li><a href="https://forums.audiworld.com/a8/msgs/27714.phtml">Re: antifreeze</a></li></ul>

2tu®bos1mission

With very very stupid people running it. I had the "thrill" of seeing this first hand. I wouldn't trust a thing they make in my car.

JimR

I'd use it in a pinch though, I suppose. I'd be curious to see what Audi says.

skiracer

And RedLine swore that their ATF fluid met or exceeded all Audi specifications. Beware.....

Seattle Scott

It's pretty easy to walk into an Audi or VW place and get red antifreeze. Most VW dealers seem happy to sell Audi parts for a slight markup if you have the number.

If the part number is good for both the dealers don't seem to care. I usually just ask for "red antifreeze", "dash light bulbs in orange sockets", etc.

JimR

Group consensus: Don't do it!

CEB

...I guess they want to to take a quick glance at performance, rather than ensure that the antifreeze attain peak performance.......

peek
Pronunciation: 'pEk
Function: intransitive verb
Etymology: Middle English piken
Date: 14th century
1 a : to look furtively b : to peer through a crack or hole or from a place of concealment -- often used with in or out
2 : to take a brief look : GLANCE

peak
Pronunciation: 'pEk
Function: noun
Etymology: perhaps alteration of pike
Date: 1530
1 : a pointed or projecting part of a garment; especially : the visor of a cap or hat
2 : PROMONTORY
3 : a sharp or pointed end
4 a (1) : the top of a hill or mountain ending in a point (2) : a prominent mountain usually having a well-defined summit b : something resembling a mountain peak
5 a : the upper aftermost corner of a fore-and-aft sail b : the narrow part of a ship's bow or stern or the part of the hold in it
6 a : the highest level or greatest degree b : a high point in a course of development especially as represented on a graph

JimR

And that was a straight cut'n'paste, in case anyone was wondering. . . . .