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Coolant Question


rover1
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could you "FAQers" give some input on what type of coolant your useing

i think my last radiator failed because of mixing coolants. i had my intake manifold off for  the interest of a vacuum leak on the intake manifold gasket. so i think i lost about half of the coolant in the system and i had no idea what coolant was in it  other then it was green coolant. so i topped it with some oem MAZDA green coolant about and about 1 month later my 02 started overheating so i checked v belt tension ok. check waterpump pully and hub bearing ok. replaced thermostate. then  R&R radiator and i noticed that the coolant pouring out of the radiator was cloudy thats when i ordered a radiator. so what coolant should i use?

 

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I don't think mixing coolants will kill your radiator in a month...  but anyway, I use the standard green struff

(Prime, it says on the jug) from Roosevelt Auto Parts.

 

If you change it every couple of years, it will serve you well.

 

I do make an effort not to mix types more often than I have to, but that's just habit from oils and stuff...

 

t

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Maybe it's overkill, but in both our '75 and '76 I use BMW Coolant (known as "Smurf-juice", because of its blue color).  It is supposedly compatable with our aluminum alloy heads, and at a cost only once every couple of years, I go with the slightly more expensive stuff. 

 

Been running a NOS OEM automatic tranny radiator in my car for the past 12 years with no apparent problems, and my wife's '76 has had a Curt Ingraham 3-core rad in her car since 2002, again, with no apparent problems.post-10-0-52907300-1369592806_thumb.jpg

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Maybe it's overkill, but in both our '75 and '76 I use BMW Coolant (known as "Smurf-juice", because of its blue color).  It is supposedly compatable with our aluminum alloy heads, and at a cost only once every couple of years, I go with the slightly more expensive stuff. 

 

Been running a NOS OEM automatic tranny radiator in my car for the past 12 years with no apparent problems, and my wife's '76 has had a Curt Ingraham 3-core rad in her car since 2002, again, with no apparent problems.

 

Likewise. The BMW blue coolant works very well. I don't know that I'd have bought it myself, but the shop that works on my car uses it exclusively, and I've come to like it.

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Nothing works better for heat transfer and capacity than plain ol' water.  That's the physics, period.  But plain water will cause your water pump seal to fail sooner, so use any brand coolant intended for auto application.  Mix it with clean water (what ever that is in your neighborhood) to the ratio indicated by your climate.  That's all there really is to coolant.

 

Don't mix brands - there is some anecdotal evidence that some coolants react with some others.  If you change brands, thoroughly flush the system INCLUDING the heater core, with water before adding another brand.

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In the 2002, I use primarily Prestone/Peak, whatever is less costly at the time, have done so since purchase.  This is for complete flush every couple of years.  In the M Roadster, I pretty much maintain the S54 as recommended by BMW, that means BMW coolant, 10w-60 TWS oil etc.

Earl

74 02Lux

02 M Roadster

72 Volvo 1800ES

Edited by Emyers
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