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Originally Posted by jonszr1
what chemical is the bad one that causes all the problems. i hear they are combining stuff . amodified verson of that evil orange . anyone know about this.?  |
Jon, I don't know all the tech stuff but this is what I know for sure.....I think!
Silicated coolant (ethlyene Glycol based coolant), other wise called green stuff, is the old fashioned toxic stuff. The color don't mean much except that most brands that use silicates as the primary corrosion inhibitor are green in color and are ethylene glycol based. Remember the color is not a fail safe test of the active chemical used. Ya gotta read the label completely as sometimes it's not listed in ingrediants but under medical remedies on the label, aka the Material saftey data listing sheet.
GM 1825-M is an ethylene glycol based coolant, and is listed in the 90's owner's manual as the correct coolant to be used. Sorry I only own one Z so that's all the info I got on what the owner's manual says about coolant. That coolant is green but it's active corosion inhibitor is a silicate & it's a glycol based coolant...that's the important part. GM still sells the stuff I get mine from P & G chevy because the local don't carry it & laughs at me alot!
The newer coolants are mostly an organic acid based coolant. They work differently than the silicated glycol based stuff. You can't mix the two as the reaction produced by mixing the two is a "jell". N/G big time! I believe the inhibitors and the coolants bear the words "organic acid based" or POA, or OAT....they stand for something but I don't know what...but I know it ain't glycol based silicated coolant!
JMHO on all this chem engineer speak....color don't mean anything. We need a glycol based silicated coolant. Acid bassed coolant ( non-silicated & non-glycol based coolants ) will cause head gasket failure in our LT5's...that bites where I come from! If I read a label and don't see the word silicates or siliacated salts and glycol based, I don't buy the stuff. I buy mine from the mentioned dealer on line. I know it's a drag but at least I know for sure I got the right item because the label says "1825-M" glycol based silicated coolant & Mr Goodwrench is smilin' back at me!
Oh by the way, Toyota still uses glycol based silicated coolant!
Tom