And....boringly....I'd rather stick within the manufacturers' limits.
I'd hate to push their stated weights too much as you never know when you just might void your insurance, and I hate to create an avoidable problem.
Just for interest, we're currently away and heading north so pushing uphill, they tell me. Our current litres per 100 kms is surprisingly lower than we've measured before. Just under 14l/ 100kms, unlike last year when we headed south in the 16.49.3 and the fuel averaged at about 16. The current van is about the same weight as the 16.49.3.
Maybe it's the accuracy of the EDS I fitted, unlike my app calculations used previously.
Whatever it is, I'm happy.
The EDS is there as the Patrol doesn't pretend to be modern ....no onboard display for temp, fuel efficiency etc...it just chugs on doing its workhorse best.