Dare I ask...what is the “strawberry milkshake”?
Think radiator.
When the head gaskets blow and engine oil and antifreeze are now one and the same; you can see a strawberry milkshake when you look inside your radiator cap or on the engine oil dipstick.
Certain models of Nissan had a problem re:Mixing of transmission fluid with radiator coolant. Resultant liquid looked like a “strawberry milkshake.” I believe Nissan has finally fixed the problem on new vehicles. However, they never issued a recall for older ones. Approx. $5K to repair...