I have heard of the water Steve and I have also heard using transmission fluid.??? I have read the threads on GM's EOS.
Used it in the past with good results. Talked to a parts guy at a Chevy dealer and he told me GM changed the formula in the EOS and doesn't recommend it in older flat tappet cammed engines. I bought the last two cans he had under the old part number.

"One thing about trains, it doesn't matter where the're going, what matters is, deciding to get on." - Polar Express