I've been having minor coolant loss for as long as I've owned my 93 rx7. I got tired of the unknown, is it a coolant seal or a leak somewhere? Recently it has gotten worse so i listened to the pros who always say "start by pressurisin the coolant system". I have my answer with my home made bike pump coolant system pressure tester i built in two min with spare parts around the garage. So im going to reiterate this easy trouble shooting tip before you freak out that your engine needs a rebuild.........oh and i know i said "pressurize the fuel system" by mistake.
