Flip...
My tear down involved only the bottom end. Although the crank mains were unbolted from the crank,(because the lower half of the case contians the lower crank mains and bearings) i never disturbed the crank, rods or cylinders. I do however believe that they are "wet" liners and that your thoughts on the DCA would correct. With all the aluminum the engine is comprised of, it would'nt hurt. From what i've read on motorcycle specific coolant bottles, motorcycle engine coolants are pretty much designed with aluminum engines in mind. My original coolant got tanked when i pulled out the water pump and mindlessly dumped engine oil into my standing coolant drain pan. So i checked around and ended up using Kawasaki coolant. It would be interesting to take some DCA test strips and test motorcycle coolants to see if they contain any DCA. Bigern