Aye! My beast has the regular stock oil cooler and pipes, and it's all in good condition... but while I was running on the autostrada in 28-32C of ambient the other week, the oil temp was up and nudging 100C quite often.
It was all well under control I guess.. the oil temp' never actually reached
100C .. but it was pushing the coolant temp' up to 90C .. it's usually glued to 86C.
I spent 6 months and The Younger Mrs S' entire shoes budget fixing the head gasket last year so anything that puts pressure on the coolant temp' makes me nervous now. I had to get out of the rev's a bit every now and then to cool it all down... but of course as soon as I sped up again, the temp's came back up too.
I think for next summer I'd just like more capacity in the cooling system.
Option 1 is the coolant radiator. The radiatore from a 2.5 TD is 6 cm wider than the v6 petrol one so it could be worth a punt. There's only a plastic blanking piece to remove to open up the area needed by the bigger rad'. The radiator supporting mount already has the hole for the wider-spaced locating lug.
But if I can bolt in a bigger oil cooler, then that would be useful too. The beast runs off a thermostat so overcooling shouldn't be an issue when I return to Blighty.
I just ran a slightly thicker oil this year (15W40) and the oil pressure hung around 3.6Bar so I can't complain.. the beast just worked..
but Tarquini is getting on a bit now (oil pump) and I'd travel easier knowing the cooling system isn't having to work quite so hard.