996 Coolant Questions

[bxtech]

Hello all,

I've done some online reading/research including a search on this site regarding different types of coolant to be used in a 996. There seems to be quite a bit of conflicting information.

- Some say that the older green/yellow factory coolant cannot be mixed with the new pink colored stuff........others say it's okay to mix including the Porsche dealer.

- Some also say that the green Audi/VW factory coolant is compatible with the older green/yellow Porsche coolant, but others say that it's not!

- Some people say that any "lifetime" coolant can be mixed and used with the factory Porsche coolant as long as it is the "OAT" (Organic Acid Technology) type coolant.

My questions are:

- Who has mixed the older green/yellow Porsche coolant with the new pink stuff? Any problems?

- Who has actually used the Audi/VW coolant? Any problems?

- Has anyone used and mixed the aftermarket "lifetime" OAT coolant with the factory Porsche coolant? Any problems?

I was recommended this Peak "lifetime" OAT coolant. They say that it can be mixed and should cause no problems. What do you guys think?

PEAK Global LifeTime 50/50

Or, I was planning to use:

Havoline DEX-COOL Extended Life Anti-Freeze/Coolant
Chevron DEX-COOL Extended Life Antifreeze/Coolant

This coolant will be mixing with the original green/yellow factory Porsche fill. It is virtually impossible to completely get every drop of the old coolant out of the system without complete disassembly!

[bxtech]

If anyone here visits the 6speedonline.com forum........here is a thread that is talking about this coolant issue:

Advantages of using porsche coolant over generic prestone? - 6speedonline.com Forums

This particular post on that thread is from the Technical Manager at Prestone:

Hi,
I am the Technical Manager for Prestone coolants. Our all makes, all models coolant is compatible with your factory fill and will not change the color of your current coolant. I looked up the specs for the ELF factory fill, it is a OAT (Organic Acid technology) long life coolant exactly like the Prestone product I am recommending. Our product meets or exceeds all ASTM standards that Porsche requires. You can get it anywhere for around 10$ for premixed 50/50 and 12.50 for concentrate. If you do buy concentrate, make sure to only mix it with demineralized or deionized water. If you have any other questions, please email me at [email protected]