Vacuum filling coolant

filthymcnasty

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Hello all,

I am replacing radiator coolant (engine not intercooler) and I will be using a tool similar to the Uview 550000 that uses shop air to create a vacuum in the engine to backfill with water/coolant.

I know some folks have used this with great success, but I was wondering where these same folks installed it...on the overflow tank cap or the crossover cap?

My assumption is the coolant overflow tank, but I'm worried that the vacuum could possibly crack the plastic.

Any recommendations from the field?
 

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