Jeremy, thats precisely why I stopped! No way was I carrying on until someone gave me permission. Obvious something was amiss, we couldn't tilt the cab as we didnt have a bar, though it is debatable at that stage if anything would have been obvious as to what was wrong. I wonder if an oil seal had gone due to the cam problem, hence the oil leak, then continuing to drive it caused the total failure....
'Let it develop' was one of the standard responses at a previous place, when I was on the council contract. 'It's meant to do that', 'a design fault', 'get out the passenger side' (when defecting a broken cab step that later cost them £3500 for an injury claim), were among the excuses given by the fitter....
The change from Perkins to Cummins power in the refuse vehicles caused a few issues too. Due to the low cab design radiator size was limited so to achieve adequate cooling the fan was uprated. Fine, until you went on the landfill during dry weather when the resulting dust cloud dropped visibility to zero, and then the lorry left site with half that dust and rubbish now firmly wedged between rad and intercooler.
I saw the Foreman on the landfill one morning tipping his first load, his lorry was overheating then. (Good jet of steam coming from expansion bottle!) Next time I saw him he was trying to limp the lorry back to the yard, (with a Police escort!), it seemed to have lost power on 4 cylinders, and was pouring with smoke..... It didnt make it, the Manitou had to be deployed to drag it back the last few hundred yards. He'd carried on with it and cooked the engine, such was the temperature reached the end of the dipstick had actually melted.