Philhod wrote:Never leave hydraulic suspended vehicles on the jack, bricks or bitz of wood
Bollocks, this is BXP so lets be realistic about this.
Leaving on the jack, perfectly acceptable if you maintain your jack, and don't abuse it. The BX only ways a tonne, it won't out do a 2 tonne jack. Your more likely to knock the car off the jack rather than the jack collapse. But that said, its not impossible, and so i will tend NOT to go under the car if its only on the jack (unless there are a large number or burly people about).
Bricks, well it really does depend on the brick. Engineering brick, do what the hell you like, concrete commons then use a lot of caution, and absolutley don't use breeze blocks, there shitter than shit. Mostly bricks will snap or shatter and give you a resonable amount of time to run. I tend to pile them side by side to give better stability. Bricks are also much more likely to trash the underside of the car, they're not very forgiving.
Wood, well this tends to be my preference. Don't use old dry wood unless you know its history, dont use brittle wood, and don't use rotten wood. Dry kilned wood can be okay if its big enough. I quite often use a couple of 4x4" timbers, but that doesn't give you a lot of height. You really should avoid stacking wood, it loves to topple. Best bet is a piece of tree trunk, i tend to go for a 10"+ diameter.