jerry cans on roof rack

laying on their back with the spout at the top is ok so long as you have a good new seal....
I find it ok if you maybe put 18 litres in....Because even new seals sorta leak a bit...
4x4 shops sell a dual jerry can holder which can strap to your roof rack..

Matt

In the past I have carried jerries on the roof rack by laying them down on a rubber mat. If you make sure, or buy new seals, the cans won't leak. You can strap them down. Just remember each weighs around 20kilos so handling is a pain and it does raise your centre of gravity a tad. I have dispensed with a roof rack now as it just encourages one to carry too much gear...lol

Cheers

As long as the seals are good and the spout is up, no prob's. And if you have a long enough syphon hose you won't even have to move them, just run the hose down to your filler ..and fill them where they are at the next servo.

DIesel or petrol?
plastic or metal jerries?
i carry plastic 20L of petrol on roofrack. (renew seals if needed)
3 jerries fit standing up in a black kerbside recycle bin, easier to tie down and stops them moving about.
only put max 20L in jerry and of course, empty the jerries as soon as possible.
drive accordingly with the centre of gravity being high.

We use 2 x 20lt red plastic cans....lay them on the side with spout up the top and not the bottom....didnt replace seals.....use marine carpet underneath, on side and behind them on the roof rack...(still got the carpet there too!) to stop and rubbing...

Laura

Just be aware of the danger (Static Electricity) either place them on the ground to fill, or use an earth strap if filling while up on the rack.
I use plastic outboard fuel tanks..low profile..robust and never leak.
Cheers