![]() If we repeat this process, we would lose more coolant again and again. I want to rephrase those as "there won't be any significant evaporation in the process if the system works properly" and "The coolant won't go anywhere under normal conditions if the system works perfectly." I will explain those in the next.Ĥ) If there is too much coolant, the expansion cap will vent the air. So my arguments "there won't be any evaporation in the process" and "The coolant won't go anywhere" are misleading. The system can hold the pressure to a certain level for sure, but it needs to vent after the limit.ģ) Yes, again, because the vented air contains some of evaporated coolant, we would lose some small amount of coolant. It might explode someday if it is vacuum-sealed everywhere. It is not, it can't, and, more importantly, it shouldn't be. If my argument sounded like "the cooling system must be vacuum-sealed", that is my bad. I didn't realize that.Ģ) Yes, again, expansion tank cap is supposed to vent the air once it reaches to the limit. Let's be nerdy together!ġ) First of all, you brought a very right point that Disco uses expansion tank instead of overflow tank. This is not normal.Īhaha, now are going pretty deep. That's CRAP! I live in Columbus Ohio, not the hills of West Virginia and even if I did live in the hills I still don't think the sensor should be set off every few months. They tried to tell me that the sensor is in a bad location and that driving on a hill could set off the sensor. In my 24 years of driving/owning cars I have NEVER had to add coolant to a car. I took it to the last dealer and they again said there was no problem found, it's been hot and I just need to add water. Everything went great for about 5 months when the light came on again. They keep it three days again and said they found a small leak. Of course a few weeks later the light comes on again, so I took it to a different dealership. I think this was a bunch of bull because coolant is already colored. They keep it a few days again then say nothing was found, but that they put dye in the coolant to see if there is a leak they couldn't detect. Another month goes by and the light comes on again. A few more weeks goes by and the light turns on again! I book an official service appointment and they kept it for a few days only to tell me they found no issues. ![]() I took it back and they again added water and told me "evaporation was normal". A few weeks later the light came on again. The service manager added water to make the sensor turn off. I called my sales man and he had me swing by. Within the first week the coolant light came on. I purchased a 2018 Discovery Sport December of last year (2018). 6 times in the shop in 10 months for coolant issues ![]()
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