Yes, I could of p**sed around for eternity and increased size time and time again but why bother. A 30 of sufficient width and thickness etc will withstand the abuse thrown at it or in my case the 2 x 19's. I have an alloy rad, slim fans, fantastic airflow and optimum positioning of my coolers. The car has no issues. Again, I'm not going to accuse anybody of lieing but I have serious doubt that over 3 vehicles (more if you count the other GTIs played with etc) that in anyway shape or form it can be my car . What ever works for you, if it works great don't change it.
I'd like to see it for myself, that a 306, with a 19 row especially with forced induction, can do a 'decent' session around a circuit in normal air temps and the oil not be above the temp where the oil is degrading.
I remember going in Birks when it was HB and the oil was at 140+ within a single lap with just one 16 row mocal.
Steve (Prism7guy) has encountered the exact same thing, with the exact same findings. We must just be unlucky with all our cars Steve. Can't win em all..
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Team Astor Grey Supercharged GTI 6