[Rederic]

Hello all –
Thanks in advance for your help.
When I’m on the highway are usually keep it running between 3500 3800 RPM.
I’m driving a Volkswagen LT 31, westfalia camper van.

It was getting a bit hot earlier but I added a coolant additive and I drop the temperatures down a little bit.
It seems that it burns about 1 L of coolant for every thousand kilometres of higher RPM highway driving.
The temperatures are not climbing.
But when I add coolant there is a little bit of pressure.
I’ve noticed a little bit of smoke too so I’m wondering is this amount of coolant loss normal at these RPMs and operating conditions?
I can’t notice any stains on the ground underneath the engine in the morning.
I’m going to closely examine all the hose connections later to see if I can see any dried residue.
Any thoughts?
Thanks in advance