VINEGAR ENGINE FLUSH WORKS GREAT !

[uncledavid]

I drive a 1997 Z3 1.5L.

I was surprised when researching vinegar for an engine flush that no one had even performed a test.

I used my old water pump http://www.318ti.org/forum/images/attach/jpg.gif and a beer can filled with water so it didn’t float and placed them into a plastic jug overnight. I filled the jug with vinegar diluted 1/3 with water. The experiment was successful. It did a wonder job turning the slug on the old water pump into silt. The beer can was not affected. http://www.318ti.org/forum/images/attach/jpg.gif

I put the old radiator in place and finished with all of my electrical and hose connections. The interior heater was set to its hottest position. I put in my diluted vinegar solution and the engine fired up with no indicators on the console.

I ran the engine until the fan kicked on and waited another 15 minutes before shutting it down. The next morning I placed a tub from Home Depot under the car. The tubs are used to mix up small batches of mortar. I use it regularly for de-greasing mechanical parts.

I used a 13mm wrench to loosen the nut to drain the coolant. Silt came out of the drain. http://www.318ti.org/forum/attachmen...1&d=1405267001

I flushed the system with water until it was clear. Of course I had to put the plug back, disassemble the components to remove the fan and old radiator install the new one. http://www.318ti.org/forum/images/icons/icon10.gif

Any questions ?

The vinegar was diluted 1/3 with water

[BlackBMWs]

Interesting reading. So did you empty the coolant then add the 1/3 2/3 mix of water/vinegar? the result looks interesting.

[alika808]

My question is you cannot drain the vinegar completely out from the engine if just drain from the radiator drain plug. The water (coolant) in the heater core too. I am wondering if left some amount of vinegar in the engine, could harm in the long run?