next time ya open the hood, take a flashlight...push the rubber airbox inlet down and look back under at the corner where fenderwell/fender/bumper come together- sadly, I'm pretty sure you will see some 'real buildup'... I pulled my fenders off to undercoat, and could not believe how much crap was in there- 300 miles on the clock, drove in rain ONE time. theres some pics here:
If you find a bunch of crap in there- there is a fairly easy way to do some spring cleaning: pop the tire off(what- 5 minutes tops?) take out (3) phillips screws into bumper, take out (3) plastic 1/4 turn camlocs, pull the front half of the wheelwell out(maybe 1 minute). Rear half only has (2) more camlocs, and (2) pin type retainers for rocker and its out too(not even a minute). Rear on mine looked so-so, but rocker cover was already packed with quite a bit of dirt...when I'd driven roads were dry, but there was still dirt/salt/coldpatch thats typical for Ohio...I think any dirt that gets on fenderwells gets blasted around wheel lip and runs down behind headlight and rocker cover...I used the front pegs for the rocker to add some cheep mudflaps without drilling anything- holds nice and tight and should keep the car a bunch cleaner too. I hope to get the struts bolted back up and the rt fender back on tonight as its supposed to be dry/sunny tomorrow and I need my 'mustang fix' bad...havent had it out in a week and this sucks!!!
cant wait till summer
trying to attach a pic, dunno if i got it right...