924Board.org

OldDog · Joined: 21 Jul 2007 Posts: 11 Location: Munich, Germany

Hi all. Can anybody recommend a decent coolant for my 924S?

I used to use Mobil Advanced Antifreeze but can't seem to get hold of it anymore.

Would VW G12 be suitable, as it is phosphate free? Can't get hold of the Zerex that our colleagues across the Atlantic seem to recommend.

Best Regards

bcblase · Joined: 23 Oct 2007 Posts: 574 Location: Winchester, VA

I have purchased some Prestone Extended Life antifreeze at Wal-Mart that is phosphate free - it is sort of a pink color when diluted.

From the Prestone website:

"For those consumers who would feel more comfortable using a phosphate-free antifreeze, our Prestone® Extended Life 5/150 Antifreeze/Coolant is phosphate, silicate, and borate free."

BC
_________________
1987 Porsche 924S - track toy
1986 Mercedes 190E 2.3-16v - autocross
2007 F-150 5.4L Lariat Supercrew - tow beast
1994 Volvo 850 Race Wagon - 24 Hours of Lemons Car
2001 BMW 325xi - daily driver

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

Ever since I found out about VW and Porsche's recommendation for phosphate and silicone free coolant I have used the VW branded stuff, which was made by GAF and sold under the Saab and VW brand names. I am sure that that produce the stuff under other names as well, but I don't know what they are.

Beware of any brand of coolant that states that it is aluminum-safe or alloy safe, or radiator, engine, and/or cooling system safe without specifically stating that it is free of phosphate and silicone compounds.