I have a 1991 Honda Accord and for some reason i have to keep on filling the reservoir. I changd the oil and found no coolant, no white resedue under the oil cap, and no drips or pudles of coolant under car. Where is all my coolant going?

 

I ate it

No, seriously, umm... the best idea that I have is that you may have a slow leak (a crack in the radiator, etc) that's leaking onto one of the many surfaces in the lower part of the car...and then flying out as you drive (hence you not noticing it). I had this happen once, where I had a VERY small crack at the top of my radiator, and coolant was seaping out of it (especially at higher temps where the pressure was getting higher), and literally just getting slung in who knows what place.

May want to go get a shop to test the coolant system out for you....

- Nathan

 

yeah man. look for a leak. is your rad. cap the original? check all your hoses. it may be very small, but if you can follow the coolant lines through the head and back to the return, and look around the thermostat housing.
good luck

 

Pressure test the radiator and start from there.

 

lol...two tea spoon on 50/50 coolant mixed with distill water can cause permanent/ inreversable damage to your brain