94Eddie
Elite Explorer
- Joined
- September 18, 2003
- Messages
- 2,842
- Reaction score
- 1,856
- Year, Model & Trim Level
- 2010 Mountaineer Premier
I don't see a need to run the cooling system at 20 psi. For the past 9-10 months I have used a 16 psi cap and have seen zero issues or the temp gauge reading any differently than when I used a 20 psi cap. Running with the extra pressure puts more strain on the cooling system and could be part of the reason so many radiators fail in the 4th gen Explorers/Mountaineers. Mine failed at just over 100k miles. The 20% lower pressure also puts less stress on other parts of the cooling system. Whatever use case that caused Ford to specify a 20 psi cap must be very rare for someone to encounter. I keep the 20 psi cap in the console should I run into this rare case. I doubt I ever see it.Just buy a regular 20psi one LOL
Mine running fine for 3 years with stock ford radiator and stock 20psi cap