Re: Freeze Plug
What luke said.
cummins pop the rear freeze plug because they have poor coolant circulation and develop hot spots(esp since the rear cyls run hotter on a common rail) and thus develop pressure and pop. Some also think the water pumps pump too much at higher rpms and develop pressure as well.
Freeze plugs can be pinned or tapped or various diffrent things.
on edit, i doubt those woule have saved snow white, if i remember correctly the block cracked, freeze plugs flying out were a side effect.
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