75 series auxillary tanks

I can't speak for all models/years, but my 93 LX Troopie has the auxillary tank with its seperate filler at the rear.

Chris, I believe that all models came with the twin 90L tanks (180L all-up). This however ( I beleive) this was a deletable option in Victoria and South Australia. So if you have a 75 series originally form either state then it might never have been fitted.

Cashy

Chris,
The aux tank was an option. Cheers
Rob

75 series RV models included the secondary tank (atleast the diesel's did anyway)