Green coolant vs. Blue BMW coolant

[E30 Cabrio]

Is there any major difference? Some say that the Blue coolant resists calcification that can clog up passages.

Is this just marketing on BMW's part to sell the Blue coolant at a higher cost?

I plan on doing my T-Belt soon and was wondering if I should use the more expensive Blue coolant.

[akorcovelos]

Is there any major difference? Some say that the Blue coolant resists calcification that can clog up passages.

Is this just marketing on BMW's part to sell the Blue coolant at a higher cost?

I plan on doing my T-Belt soon and was wondering if I should use the more expensive Blue coolant.

I'm sure someone will disagree, but my buddy who is a BMW tech said that in the 80's it did make a difference, but modern green coolent is fine. I have run regular coolent in all but one of my E30s with no problems what-so-ever.

[NOMAD]

always put in blue right before you sell it. ;)

[DCColegrove]

Just as long as it is phosphate and nitrate free you will be fine.

I actually dont use BMW coolant because it precipitates so much silica (that whitish shit that drops out of suspension and builds up all over hell)

[ethirtydavid]

always put in blue right before you sell it. ;)

:)

[jflip2002]

G05 instead of green usually. But blue is usually pretty cheap anyhow, what, $15 a gallon?

[DCColegrove]

Oh, this is important.

I can't remember the specific make up of it but the red stuff "Dex Cool??" is NOT okay.
Eats the tank seals in the heater core, radiator, heater control valve....

[NOMAD]

depends on what dealership you go to. I paid 20 because I'm stupid and just wanted to get the car back together.

[FredK]

Regular ass coolant: Inorganic Acid Technology (IAT)
Glysantin-based additive package (BMW, Saab, Mopar, Mercedes, others): Hybrid Organic Acid Technology (HOAT)
Dex Cool (GM): Organic Acid Technology (OAT)

[golde30]

i use the bmw coolant, its only like a couple bucks more than prestone...

[jflip2002]

G05 = HOAT. It works, but just shell out the money for the blue stuff. When you go to the dealership, tell them they always "list" parts out for you.

[BeirBrennerE30]

you can get BMW coolant through bimmerworld at a more competitive price than the dealer... might be worth checking it out. Its what I use

[allwheeldrive]

I am not a fan of the red coolant. Nor the pink coolant. Very acidic, eats seals and usually causes leaks. Green is tried and true. :)

[Mike]

Ethylene Glycol based, is what you need

[Dave McLaren]

I like to see gen-eu-wine BMW coolant stocked in my garage.

i use the bmw coolant, its only like a couple bucks more than prestone...