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Just passing this new info along. Different finish options available $. One downside is not being able to view the amount of coolant in the tank at a glance. Now $250, $275 after special is over.

 

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How would you mount it with no access to the inside to attach a nut?

Agreed, I'm having a problem visualizing how this is mounted.

And here you go!
Amazon.com: Rigid Plastic Sight Closed Circuit Liquid Level Gauge, Mounting Centers (In.) 5 : Industrial & Scientific

Rob, can you explain how this would be mounted? I'm having a problem visualizing how this is installed.

 

[ChopTop]

I just realized you'd also lose the function of the coolant sensor with this right? I wonder if that means your coolant sensor dashboard light would always be on? I guess that's a question for PAW.

 

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Perhaps. Maybe just me, but every vehicle I’ve owned has had a visual way of checking the coolant level with a glance. Just a convenience thing for me.

HHGadget addressed that in post 17 with a sight glass installation. Though I'm not sure how one would go about determining where it should be located.