Quote:
Originally Posted by Need_for_speed
I'm about to do this little upgrade myself. Allow me a dumb question: do you need to do a complete coolant flush and bleed with this swapout?
By the way, what the heck would we do without JFP on this forum? Seriously.  |
No, but you do need to lower the coolant level as the cooler is the highest point in the cooling system. If the coolant mix is four years old or older, just dump the system and refill it with fresh.
Even with the cooling system level lowered, you need to lift the old cooler very slightly without tilting it, and slide a plastic bag under it before pulling the rest of the way out. The four holes below the cooler are two for oil (in and out) and the same for coolant. As there will always be some oil and coolant retained in the old cooler, if you tilt it without covering the bottom, you risk getting oil into the cooling system as well as coolant into the oil system passages. None of that is good, so get a large plastic bag to slide under and up the sides of the old cooler before removing it.
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