I think the steep uphill section of wet 3-lane asphalt which we became stuck may have been Bolu pass. There is one photograph in one of the books but it is taken from the top looking down. Does anyone remember if Bolu was 3-lane in 1984 (two lanes up) ?
Also can any one remember the drive arrangement on a dual rear axle Mercedes-Benz ? There was a button on the dashboard which had a cross on it, I think between the two axles. Was it a button which engaged the second axle or was it a diff lock (diff locks ?) which locked the inter-axle diff, or all three diffs ?