Reddit reviews Rain-X 630046 Interior Glass Anti-Fog - 12 fl. oz.
We found 3 Reddit comments about Rain-X 630046 Interior Glass Anti-Fog - 12 fl. oz.. Here are the top ones, ranked by their Reddit score.
Reduced interior foggingImproved visibilityFor automotive and marine interior glass and mirrors
They also make defogger cleaning fluids that supposedly make your windshield less susceptible to fogging (by absorbing the moisture or something). Tried it out recently, works pretty well so far.
Most heater cores are a part of the coolant flow path even when the heater is off. Check your coolant level, if you have a leak it will show up in low coolant.
You can always give this a shot.
https://www.amazon.com/gp/aw/d/B00T9LR9FA/ref=mp_s_a_1_1?ie=UTF8&qid=1499525809&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=anti+fog+windshield
I considered it until I found the pin hole leak in my heater hose.
Rain-X 630046 Interior Glass Anti-Fog - 12 fl. oz. https://www.amazon.com/dp/B00T9LR9FA/ref=cm_sw_r_cp_apa_dMcFybT8STS6R