BlueTR3A-5EKT Posted June 11 Report Posted June 11 (edited) Asking for a friend as I am at a loss New engine. Never been run except to tune after total overhaul New blue antifreeze been in 1 month. The container says it is under 6 months old Engine has been started and run plus basic tuning All new radiator etc too Removed thermostat cover to fit thermostat of different temp and found the crystals in the outlet cover and thermostat and top hose. Any ideas? PS He is not in New Mexico and called Heisenberg Edited June 11 by BlueTR3A-5EKT Quote
Don H. Posted June 11 Report Posted June 11 Looks sorta like the dried red Toyota coolant from a tiny seep on my older Toyota pickup. Is the deposit resoluble in water? I’d guess it is, and is somehow related to evaporation. If it isn’t resoluble, it sounds like some sort of chemical incompatibility leading to the blue precipitate and is probably a bugger concern. Is there any chance an acidic low-pH or alkaline high-pH cleaner was left in the water passages during boilout? Quote
BlueTR3A-5EKT Posted June 11 Author Report Posted June 11 (edited) Thanks. Don i have forwarded the question about solubility. More when I know…… more info the water used with the blue antifreeze was from a condenser used to dehumidify the garage. ‘That surely must be not really be water as we know it, Jim’. It tastes horrid! Edited June 11 by BlueTR3A-5EKT Quote
Don H. Posted June 11 Report Posted June 11 Note the distinct red deposit showing where a slow leak was evaporating Toyota red coolant from a radiator tank (replaced last year) on one of my Toyota trucks. There was nothing wrong but this slow leak and the dried red crust. The blue stuff looks similar, but a root cause for why so much deposit would evaoporate inside a closed system is not at all clear. Quote
RogerH Posted June 12 Report Posted June 12 Yesterday, in Halfords, I came across an antifreeze that I had not seen before. NAP-Free antifreeze and it is BLUE. The blurb with it suggests that it is for big diesel engines and NOT for our old cars - why is it BLUE Could this react with our Silicate antifreeze that is also BLUE Roger Quote
RobH Posted June 12 Report Posted June 12 (edited) NAP stands for nitrates, amines and phosphenes. That stuff is also called HOAT or hybrid organic acid technology coolant . Dying it blue is naughty but just goes to show you shouldn't buy antifreeze just by the colour. Edited June 12 by RobH Quote
BlueTR3A-5EKT Posted June 12 Author Report Posted June 12 24 minutes ago, RogerH said: Yesterday, in Halfords, I came across an antifreeze that I had not seen before. NAP-Free antifreeze and it is BLUE. The blurb with it suggests that it is for big diesel engines and NOT for our old cars - why is it BLUE Could this react with our Silicate antifreeze that is also BLUE Roger I’ll have to check where he got the blue antifreeze and it’s make. Thanks Roger. Another thing is sent to try us Quote
stuart Posted June 12 Report Posted June 12 Regardless of its make up, on a fresh built engine with all waterways clean and dry etc to start it still shouldnt be doing that. Basic chemistry would suggest thats due to evaporation but it shouldnt be able to in a closed system unless theres a huge air gap. Stuart. Quote
Charlie D Posted June 12 Report Posted June 12 14 minutes ago, stuart said: Basic chemistry would suggest thats due to evaporation Maybe worth a test by boiling some up on the cooker until it's all evaporated and see what the residue looks like. Quote
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