Topic title says it all... Thanks in advance... Auto parts store said it was compatible... Is it?

 

Not enough info. There's all kinds of different Prestone coolants out there. Which Prestone are you referring to?

Actually, forget I asked, just go to Walmart or NAPA auto and get Zerex G-05 coolant. It's the same stuff as the Ford "gold" coolant.

Stewart

PS - If it were my 6.0L PSD, I'd flush that "Gold" outta there and refill with an OAT Extended Life Coolant.

 

Stewart,

It was the "all for one", color doesn't matter, coolant... Or so the bottle said...

Also, I saw where Zerex G-05 was the same as MC Gold, but wasn't so sure...

 

I honestly have no idea what is in that universal "compatible with all types, all colors" Prestone because I will never use it. I'd fill with just tap water before using it.

If you're dead set on using the "gold", just get a jug of the Zerex G-05.

Stewart

 

I would never trust that saying. Diesels need anti cavitation inhibitors to prevent the engine knock scarring the outside of your sleeve, plus the coolant in a 6.0 is very taxed as it cools the engine, the oil, and the exhaust in the egr cooler.

 

as a general rule never ever mix anything with Ford Gold Collant.

General rule #2, get the Ford crap out of your 6.0. it leads to oil cooler failure. use a stated ELC coolant, Prestone is fine. swap it all out.

 

So I take it that Zerex G-05 is good to use on my 2005 Ford F250 V10?
Thanks

 

Yup. Gasser, not a diesel, so you're good to go.

Stewart

 

I wish it was that easy around here. The last time I looked for Zerex the only place I could find it locally was Grainger. They usually only have a bottle or two on the shelf, so I have to special order it, and they only have the 50/50 prediluted mixture for around $12/gal. It actually works out cheaper to go online or buy genuine Motorcraft from the dealership at $16 - $17/gal.


I'm pretty sure that gold stuff is a HOAT (hybrid) extended life coolant, not that I really know what that means in practical terms, beyond what I've read around the web. I do know the subject of coolants is another online holy war of sorts.

 

Yeah, so Prestone claims, but the auto manufacturers and name brand coolant companies really disagree. I'm pretty sure they are all ethylene glycol based and the major differences are the additives and rust inhibitors they use. I tend to avoid the "all-for-one" types because the most consistent advice I've found warns not to mix different types together.

 

Andrew, you're exactly right, it's a H-OAT coolant.

What that means is this: the Ford "gold"/Zerex G-05 Hybrid Organic Acid Technology coolant still contains silicates. Silicate drop out is what causes problems with the 6.0 coolant passages in the oil cooler, and it also eats the water pump seals. That's why Late '99 and up 7.3L PSD owners that had conventional "green" coolant will flush and fill with an OAT ELC, because the "green" has a lot more silicates than the "gold"

You can read more here, where I have a ton more info listed in this thread: Gooch's Coolant Flush Procedure and In-Depth Coolant Information - FTE

Stewart