u/KeyEntertainment5155

97 GMC Sierra K1500 with 213,438 miles. So, my vehicle has two flimsy caps that have no writing on them, they are just plain plastic caps for the radiator and coolant reservoir. The previous owners must have replaced them with cheaper ones, because they are flimsy and the reservoir cap barely latches on. I have no milky oil, no exhaust smoke and no signs of a blown head gasket or intake gasket issues either. I'm thinking this is the cause to my slow coolant loss. The vehicle is heavily modified with newer parts.