[John Brown]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: John Brown</div><div class="ubbcode-body"> What does that Purple stuff do to aluminum? </div></div>

Just tried Purple Power out on an Aluminum Thermostat Housing for a sb/bb Chevy.

I won't do that again. [img]<<GRAEMLIN_URL>>/thumbsdown.gif[/img]

I only had it in for about an hour. Full strength Purple Power took off some more of the left over paint and goo, but the bowl was foaming and the aluminum was changing color. The housing came out pretty dark. Luckily I didn't leave it in overnight like I had originally planned. I had a speedo reducer housing (zink?) and gears that I had left in for two days and the P.P. loosened all the old grease and crud. Worked fine on that. Gonna try some plastic parts next. I think I'm gonna like it though. Just don't put any vauluable parts in there with out trying it on a junk part first.