Been doing a little reading( ingredients ,that is )
Butches Bore Shine [img]/ubbthreads/images/graemlins/tongue.gif[/img]etroleum naptha-8030-30-6, water 7732-18-5, butoxyl ethanol 111-76-2, 9-octadeceoic acid, (2) ammonium salt 544-60-5, mineral oil 6474-52-5, methylamy alcohol 108-11-2
GM top end engine cleaner(TEC) : ditto
Butches -$6.99 4 oz.
GM TEC -$ditto for 16 oz.
I used the butches till it was looking pretty clean then the GM TEC same way and it cleaned as much as the Butches did the first time. Ammonia present in both Butches has something to give it a pink color and a diff smell.FWIW