
 Originally Posted by 
BilboBoggles
					 
				 
				The dust in the back - The later PUMA's are really bad at this - although they have improved a little on the MY13 model I have.  The issue is that there is very little seallant on the panel seams.  And on a Defender there are often very large gaps.
A way to limit dust in the vehicle - is to never drive with the windows open, and always have the A/C on flow through.  This pressurizes the inside and keeps the dust out.  Obviously not always convenient.
Iv'e used three tubes of Butyl mastic on mine.  The trick is to apply at night.  Get a very bright light, such as a flouro, and put it inside the defender in the rear.  Then hop under it with a torch and a tube of goo.  You will see the underside lit up like a christmas tree with light seeping through many seams - especially around the rear seat box.  Just goop these up until you see light no more.  Move the light around all over the inside until you see no more light underneath.  Then repeat with the light underneath.  
That will get rid of about 60% of the dust.  
The next step is to get a high pressure fire hose, and spray the crap out of the underneath.  You will get water on the inside - probably around the 2nd row of seats on the floor.  Make a note of where it's coming in and then goo it when its dry.
Pay special attention around the fuel filler,  there are seams on the inside that are open to the outside and the corners will leak dust and water in.  Goo them.
Then remove the rear speaker covers.  You will be greeted by piles of dust.   You may be able to goo these from the inside....  But most likely that is coming through the gaps around the body cappings.   Now I did not goo these on my new defender as I am paranoid about water getting in and rusting these.  But they were gooed on my 2009 Defender with black silicone by the dealer when they had a go at gooing them.   In stead I live with a little dust, but spray Inox in to the cappings monthly to keep the rust out.
After that - I get a fine layer of dust after a trip.  but nothing like the great big one inch piles of dust I would have got before.
			
		 
	
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