Hi,
My mini is have a few cooling issues while idleing. It runs great when moving sits at around 75 but as soon as you stop temps gradually rise to over 90 and will drop if you pick the revs up. It currently has a 11 blade plastic fan I was wondering if the 6 blade steel or any other types would help? Would rather not put an electric fan on as well.

Thanks

I would say it is running a bit cold at 75deg. Something like 85deg would be better especially to get the oil temp up and burn off all the moisture and crap in the oil.

You can go over 100 deg at idle if the cooling system is pressurized. Its a common trait for them to get hot at idle.

I would recommend double checking the temps with an Infrared temp gun to make sure your temp guage is accurate.