When you go in the direction of Thessaloniki-Kavala-Keramoti motorway, about 6km after Kavala, you will see the road sign to turn to Nea Karvali (Fillipos B' and Kavala east). Follow signs to Nea Karvali and after 1.2km on the right side you will see a Shell gas station where you can pour LPG, as well as other types of fuel, and station also offers car wash with brushes, while during that time you can refresh in the restaurant in the shade. To reach Keramoti you don't have to return back to the highway, but just continue the old road (which is parallel to the highway) for another 11.5 km (which is in great conditon) before turning to Keramoti (same turn as if you were coming from the highway, just the opposite directions).On returning from Thasos, at the exit of Keramoti do not turn right to Kavala, but go left on the old road that leads through the village Nea Karvali (follow the signs Kavala - Xanthi). On the way out of Nea Karvali, the gas station is on the left side of the highway, and after 1.2km turn on the motorway and follow the signs to Thessaloniki (Salonika).

Latitude 40.964903°N
Longitude 24.498239°E

Click the link to see the location map and GPS coordinates of all LPG stations in Greece