After installing acoustic insulation in the car I was very surprised how much heat was originally coming in through the metal roof. Noticed this even more as I had filled the large gaps in the ceiling but not at the front around the sun visors as that was more difficult.

So pulled the ceiling down again & squeezed bits of foam in where I could. It stopped the remaining heat through the front of the roof.

Another area was the fire wall. After installing insulation here I was again surprised about the amount of heat reduction.

On long runs in the outback where you would simply leave the air conditioning on, you can turn it off & not get too hot. We usually leave it on anyway but it has been an interesting observation at how much acoustic insulation helps thermally. Procrastination, mankind's greatest labour saving device!

Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18