I have a temperature gauge installed on my car and I always monitor the temperature when the car is on. I never let it go past 100 degrees Celsius as I flip the fans on when it reaches around 100C. What I am concerned about tho is when the vehicle is off. When I park the car I keep it running for like 3 min with the fans on. When I turn the vehicle off, is there a chance that the temperature can rise and blow out the seal? From what I understand coolant doesn't circulate when the engine is off, would this be a good or bad thing?

 

If the coolant is "cool" (under 200F) when you shutoff the car, the seals will never get that hot even when heat soaking. Generally what kills the coolant seals isn't "overheating" as in 240F, its when you overheat your coolant it boils, allowing localized temps to skyrocket in the vapor zones. Once the car turns off you'll heat soak yes, but not enough to cause damage. I have a feeling if heat soak could be eliminated this would extend the life of the coolant seals, but as is you are operating well within the design parameters, heat soak is just something you just have to accept.

 

thanks for the answer Nathan

 

the average temp in hawaii where the temp is 80 degrees F. is about 85-87 degrees C.

 

yeah here in LA it's about 85 degrees C...when it reaches about 100 I flip on the fans

 

correct me if i am wrong, but isnt the AST made JUST for that, to get rid of air pockets/bubbles where the coolant travels , thus eliminating this problem?

 

No and AST will not eliminate this problem.