klc317 Posted November 22, 2009 Report Share Posted November 22, 2009 Has anyone else noticed a rusty area that develops right outboard of the rear coil springs on the lower arm? I should have taken a pic but didn't. It is on our '07 MKX. I regularly use a diluted combination of Simple Green/water on the undercarriage of our vehicles and flush them out thoroughly and they all still look like brand new underneath. Anyway, I was thinking of wire brushing off the area in question and trying out some POR 15 chassis black.. Anyone else tried this? I've always heard good things about it but have never tried it. Quote Link to comment Share on other sites More sharing options...
Lex Talionis Posted November 23, 2009 Report Share Posted November 23, 2009 I used it on an old '74 FJ40 frame. stuff works awesome. BTW, I do not have this issue on my Edge. no harm in using it though. Quote Link to comment Share on other sites More sharing options...
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