Re: Do I really need a new radiator?
My coolant level still slowly drops, my coolant level in the overflow tank drops down to the Min level about every 30 miles driven. Yet I find no evidence of a coolant leak, and I don't have any symptoms of a failed head gasket (no smoke from tailpipe, coolant is clear, motor oil is clear, no loss of power or weird symptoms...).
The mechanic never burped my coolant system 2+ months ago after draining & refilling my coolant. He WAS in the process of burping it but I literally said to him "Can you please stop burping it" because he was revving my engine, which is a pet peeve of mine. lol.
So because my system was never burped, I really doubt that the full 2.75 gallons (10.9 quarts) was put into my system, and my suspicion is that I have been continually adding coolant to it because every time the truck gets up to temp and the thermostat opens, more air is being worked out of the system, and so the level in the overflow tank is going down more and more. For someone who drives their vehicle a lot, this bleeding process would go on for a few days or a week maybe. But because I only drive this truck a couple times a week (and fairly short distances), the bleeding process is still occuring even now, and will continue to occur until the full 2.75 gallon capacity of coolant is present in my system.
This is my current theory, just thought I'd update.
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2003 Mazda B2300
2.3 L DOHC
4 Cylinder, Automatic Transmission
168,000 miles on Odometer as of Mar 2020
25 mpg on mixed hwy/city driving
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