Pic 1 shows cutting oil. To the left you can see GulfCut gallon. In the diet coke bottle, its the synthetic gulfcut oil mixed with water. Notice the amber color.
To the right you can see ordinary cutting oil (diesel based). If you mix this with water, you get milky white solution (which you can see in my previous posts).
Second pic : GulfCut mixed with water.jpg is the close-up of water-synthetic oil mixed. (Notice how soluble it is i.e. no layers formed. This solution I made more than 30 days ago).
Third pic is the reservoir pic. The hole that you see is where the pump would be.
Fourth pic shows the rad and fan with 1/2 inch pipe. Notice the rad 'tank' and barbs are made from brass.
I could not find another bottle to show you the actual (non-mixed) form of synthetic oil (was not able to finish up a bottle of coke myself

). However, I shall show you that in my next post as soon as the 'T's are made and perhaps nickel plate /chrome the pump also.