Original sentence: To ensure that vehicles traded-in under "Cash For Clunkers" will not be resold by dealers, the program outlines a procedure for destructively disabling the engine (and thus also precluding the possibility that any mechanical engine components might be salvaged to be used in the repair of any other vehicles): The motor oil is drained and replaced with a sodium silicate solution, then the engine is then started and run until the solution, becoming glass-like when heated, causes engine internals to abrade and ultimately seize
Edited sentence: To ensure that vehicles traded-in under "Cash For Clunkers" will not be resold by dealers, the program outlines a procedure for destructively disabling the engine (and thus also precluding the possibility that any mechanical engine components might be salvaged to be used in the repair of any other vehicles): The motor oil is drained and replaced with a sodium silicate solution, then the engine is started and run until the solution, becoming glass-like when heated, causes engine internals to abrade and ultimately seize