Romak47 - I buy my German Castrol from a indi parts place called: Stahlgruber.
http://www.stahlgruber.de/vertriebsgebiet/index.php
click on the top right corner that says: "Sales Territory" to find a store near you. I think Weissbaden or Mannheim are teh clostest to you. You can also try a store by the name:
Trost. They also have good deals on auto parts and also carry Castrol oils. Or... just buy it at your local grocery store. That would be the most expensive option though.
Trost....
http://de.trost.com/
You will see a map on their home page to find a shop near you.
A five liter jug of German Castrol RS Edge 0w40 oil costs me 53 euros at Stahlgruber using a tax free form. I think the normal price is 69 or 79 euros. I have seen it for as muct as 89 euros though at some German stores, like Toom or REAL. A single liter cost me 12 euros, so that is why I always just buy one ot two 5L jugs.
Castrol RS Edge 0w40 LL-4 oil... new and ol bottles... I pay
53 euros for a 5L jug like these.
single liter bottles - taken at REAL German grocery store. I think Toom Markts are more common by you. Or maybe Praticka or even Obi might also sell this oil. Note the high-er oil prices!
My price is only 12 euros at Stahlgruber for this very same oil!!
back of the G.C. single liter bottle...
Romak - IF you can't find the German Castrol oil you can always PM me and I can buy some locally here for you. We get free shipping APO to APO.
bye,
Dackel