OK, there are two traditional routes for aux tanks for LCs, one is a 50-60l tank up above the spare wheel (assuming you have an 80 or 100) under the boot or a bigger 160-180l tank under the boot requiring the relocation of the spare wheel.

The factory arrangement (available in Aus, etc) is to have a 50l aux tank under the boot and then a solenoid (actually a pair of them) so that you can switch the feed to the engine from one tank to another.

The larger 180l Long Ranger Tanks are designed to operate on a similar basis and you can either go down the Toyota wiring route (expensive) or use a 3rd party solenoids. Either way with these larger tanks you need to relocate the spare wheel which in itself gets very expensive.

FrontRunner do a small aux tank (62l) that sits above the spare wheel and acts as a header tank to the main tank - this is by far the cheapest route.

They also do a larger (180l) tank that operates with a transfer pump.

On top of the tank options is the filler options. The FrontRunner small tank is just a case of hacking the existing filler where as for the others you need to be able to fill one tank or another. Personally I prefer to just go down the route of the factory double filler, but I know some others have gone down the route of hacking the existing filler and welding into a Y shape.


Overall I'm not a great fan of the FrontRunner sub tank because it does sit very tightly between the chassis and body, but does fill a gap at the 'budget' (none of them are cheap) end of the market.

I much prefer the belt and braces approach of using a solenoid for switching between the tanks as well as the nice factory double filler with valve so you can keep the fuel seperate.

Also consider getting a Walbro pusher pump fitted - we find that people often end up running out of fuel more often with two tanks because they tend to be slow at switching over - the pusher pump takes the hassle out of bleeding the system.

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Cheers,

Julian Voelcker
Overland Cruisers - Specialising in Land Cruiser preparation and servicing.