Currently using a day cab Volvo FM (out based from the yard - so no one around to ask) -
Checked it today and level is fine but how the bloody hell are you supposed to fill it.
There is a gap of about 4/5 inches from the cap of the tank to the top of the compartment.
Looked all over the rear of the cab and elsewhere under the bonnet and nothing obvious
No manual knocking around either.
Can someone please enlighten me?