I’ve had to top off my coolant almost every time I drive my car. It is not leaking externally. I do not see any coolant on the dipstick nor do I see any oil in the coolant. I have done the chemical test on the block and dye stayed blue. Only thing I can think is if it is being slowly being burned in the cylinder, but if this was the case I should have noted a change in the chemical. I also don’t smell antifreeze out the exhaust. Exhaust is white but it’s also cold right now. Next step is gonna be leak down. Does anyone have any thoughts? Motor has maybe 800 miles on it.