under 12 months old and two of the fairly new ngk`s have failed, new pair going in tomoz, hopefully replaced under warranty

Sometimes you can just be unlucky, i`ve had new sensors out of the box knackered - also glow plugs

Mike I put NGK's in this time last year in the old truck, got about 2 months out them before they started failing, took them back to dingbro and got them replaced under warranty, chap says its not uncommon nearly at £60 for the set, I got a set of bosch for this truck simply because my local dingbro no longer stock NGK glow plugs, don't know why?
The bosch ones were only £42 and are doing the job nicely
I've still got 2 working NGK's in the garage as only 2 on the new truck were goosed if they are any good to you their yours?

i have the replacement two in the truck at mo, chap i deal with refused to take the money for the replacements until the rep has seen them - be next year now,, thanks for the kind thought though mate, just getting up the urge to go outside and break the polar bears off the truck and open the bonnet , as luck would have it i had a couple the originals in me tool box - god only knows why-think i have squirrel syndrome, so she was kept running, just still a tw@t to start, again cheers