Can I mix pentofrost coolant?

Ive been using pentofrost E but I can only get the ++ or SF. I read the E isnt good for the tdi cause it has silicates. Should I fluch it all out or cna I just top off and can I mix it with these other 2?

I use the pentofrost sf. I know you can't mix different brands because it will cause the radiator, and block to grow catilysts. NOT GOOD! I don't know about mixing the different pentofrost kinds though. My advice would be unless you can find somebody that knows exactly what they're doing and says you can mix those. I would just flush the system and add new stuff it's not worth wrecking the radiator or block. Be careful who you listen to, I went to O'Reilly's and asked them if it would cause any issues to mix two similer kinds ( i cant remember the name)they said it wouldn't. I decided to look it up online anyway and I found that you can't mix different brands. There's something in the TDI coolant that makes it incompatible with different kinds. Sorry if it sounds like I don't know what I'm talking about, I've done the research within the last year I just can't remember all of the terms. Lol

GlowBugTDI

Pentofrost E and SF are compatible.

The silicate content is not an issue. What one wants to use is an OAT (organic acid technology, no silicates) or HOAT (hybrid organic acid technology, contains a tiny amount of silicates) coolant.

You can mix any G12/G13 rated coolant. You can also mix Zerex G-40 coolants with any G12/G13 coolants. For color stay with red/pink/purple. I mention Zerex G-40 because O'Rielly's sells it.

DO NOT USE Dexcool, Prestone, Peak, or any of the dexcool clone coolants. Dexcool and its clones are OAT based but the additive package is a bit different. Many of the generic dexcool clone coolants claim to be universal coolants. That applies only to the dexcool family.

I hope this helps.

Im just here to watch the inevitable heated debate on coolant types and harmful silicates.

good job BKmetz, I had been told previously that zerex G40 wouldn't work. the guy that I heard that from could have been wrong though. have you used zerex G40 before?

the reason I ask is because it is a lot cheaper then pentofrost.

Mongler98 said:

Im just here to watch the inevitable heated debate on coolant types and harmful silicates.

Click to expand...

Ok.
I've run DexCool in my 2001 since the rebuild project in 2004 (before I knew any better). But the entire system was empty, dry and clean. So no mixing of types.
Do not mix coolant types. "Universal" coolants aren't across the board universal. Avoid them unless it's an emergency. Stay with compatible/recommended coolant type(s). (Disclaimer)

What about the same coolant type, but from different brands?

I.e. pentosin sf with pentofrost sf

Dadwagon said:

What about the same coolant type, but from different brands?

I.e. pentosin sf with pentofrost sf

Click to expand...

?? Pentosin is the name of the company, Pentofrost is the brand name for their line of coolants... Please read the post by BKmetz above.