anti freeze will eat the babbit off of the bearings my wifes cousin let the garage tell him there would be no problem with agood rincing of the engine in a 98 model year car after a heated discussion. less than 2000 miles later he blue a rod 200 miles from home .taking it back to the dealer ,they fixed it with new short block for $3750.00 . after more heated talk they gave him a break ??????/ and only charged him $1550.00 CLEAN THAT ANTI FREEZE OUT BEFORE YOU RUN THAT ENGINE.