487

Track events increasingly require water in radiator for non "pinned" 996 turbos, anyone with simple way to go back and forth as seasons change to track in summer and protect engine in winter other than taking to a shop 2 times a year?

Macster

Invest in a vacuum lift system which pulls a vacuum on the cooling system -- to the point the hoses collapse -- then with the flip of a switch (valve) the vacuum line is remove and the cooling system at very low pressure is connected with a reservoir of fresh coolant (or water) and filled in practically no time with no air pockets.

All I think you need do before switching from one type of fluid to another is maybe flush the system with regular tap water (or whatever the maker of Water Wetter advise when moving from anti-freeze based coolant to water/Water Wetter and back again).

You can use the vacuum lift system to fill the cooling system with plain old water and then drain and dispose of properly then refill with whichever of the types of cooling fluid the season calls for.

You can probably save the coolant and even the water with water wetter in it to reuse next season. Years ago, I used large -- 5 gallon -- plastic gas "cans" that had never had any gas or any other liquid in them for storing coolant.

GetBoosted

Those vacuum evacuation systems are excellent. Just used one in my tow vehicle for a change. Made it much easier & cleaner to change.

fpb111

here is the one I use. There is a drain plug on the bottom left of the center radiator. I use ~15lbs air pressure on the reservoir to drain. Use one of the adapters and your air gun from your new UView 550000 to pressurize the system.
http://www.tooldiscounter.com/ItemDi...FQNkhgodL0oGnQ

jimq

How many gallons are in our systems?

fpb111

I think the manual says 6.5 - 6.7gallons.
After replacing the radiators I mixed 6 gallons and it took ~5.8 the first time with the Vacuum tool. After I drove it around the block and let it cool I put another 1/2 gallon to bring it a little above the middle between Min/Max.