UK - England
Opie Oils are currently selling 4 litres for £31.99.
Buy 8 litres and it’s free postage.
I also found a 10% off code online so 8 litres cost me £57.59 – great value.
PS Kenny apparently they will give special deals to car forums etc, so it might be worth you getting in touch with Opie to do a deal for us all!