Hm, ok, 1.3 insted of 1.1
If there is really a difference to the radiator Caps in holding more pressure
then..... it would be interesting how much difference the Caps have
weight !
It would be nice if someone can do that and give us the
weight from the original Radiator Cap and the STI Radiator Cap.
Letīs see if the STI Cap is " Stronger" Build and is minimal heavier
from material cause of the "higher" 1.3 pressure-proof