i keep a spare set of everything plugs secors you name it after a service i keek the old stuff for back up in the boot but problem i got now i got all the crap in the boot back on as i had a missfire that turned out to an ecu problem cars running mint cant be assed to change it all back over i dont no what it is with these yb but condensation you wouldnt believe i just put a new exhaust on last week and the water pissing out of it i stainless welded everything together ive left a small pinhole in the down pipe the amount of water that dribbles after i turn the engine of if i didnt no better i would of thought i got head gasket probs some of these modern cars you see it spraying out the back no wounder plugs dont last especially cheap ones ive mothered a set of halfords ones in a couple of winters starting up and short journeys with less than a 1000 miles on them