>The overflow bottle SB914-025 only affects engine serial #s up to S/N
>4,420.316
>The Service Bulletin for the 912 series is SB-912-039
>Jim Brown
It was the overflow bottle that was the main cause of my problems 3 years
ago. My bottle exploded and filled the cowling with coolant vapour. Not
quite enough to stop the engine unfortunately. I also didn't realize when
we diluted from 75% glycol that 50/50 coolant mix boils at 115 deg C in
free air and 130 deg C at the nominal 1 Atmos. overpressure. Should have
checked, shouldn't I!
Graham
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