I wanna do a full service and buy the hole lot of oil,

i read a few different answers related to the oil´s...

so what will be a good choice of oil´s and how much do i need...

Patrol GQ 1991 4.2 Petrol on LPG with Auto

Engine oil
front diff
rear diff
transfercase
Transmission

Is there a special coolant anti freeze?
And can i use the same oil except the auto oil for my mates 91´GQ with 3.0 Petrol on Gas with manual?

Also i will put a new set of spark plugs in...any recomendation regarding the Dual Fuel?

Many thanks for ur help guy´s...i will give it all back by time...just need to get the hang to this awesome Truck´s....:-)

Cheers
Oliver