I guess, it's some kind of fluid, like diesel or oil that's sucked back onto
the hatch by the vacuum created by the speeding body at travel.
Zoltan

----- Original Message -----
From: "ralph meyermann" <ralphmeyermann@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, January 14, 2012 10:48 AM
Subject: Grey oily spots on rear hatch

> I've noticed on some of my drives I've been getting grey oily spots on my
> rear hatch! I believe its unburnt fuel!! Possible bad injector/s. Was
> thinking having my friends preferred diesel shop do injectors and go
> through the pump too maybe raise the psi too?? Hoping for better fuel burn
> for more mouse power and fuel economy and minimize the mess on my rear
> hatch!
>
> Velma 82diesel 1.6 na westy
>