BG do not use wd40 it is too expensive they use ac90. BG also issued a fan lube which was flame resistant, apparently developed by a bg engineer and his mate who was a chemist. This was soon withdrawn because an 'engineer' sprayed it into his eyes trying to apply it to a running fan! AC90 was again the way forward. Don't forget people that BG engineers have a sole purpose, Performance, 1st time fix, parts costs, recall rate (if it works for 28 days you don't get a recall) Patch margin of profit to customer contract rate, boiler sales leads and please sell a CO detector on every visit. Even if the customer can purchase the sf CO detection alarm at half the price in B&Q or Tesco. They will also only charge 30 mins labour to hammer a nail in the wall and pull out a red tag from the battery comp in a CO detector! BARGAIN!!!
A new fan will cost around £130 +/- 20. plus 30 mins labour.
You my friend have been done in. If it was explained that this temp fix could last 1 hour or 10 years, would you have paid this, no.
On call assistance jobs give BG a very bad name, but they will continue bbeacusethat job would be exactly the same price for fitting a universal thermocouple or pressing a reset button. BG Doing the right thing and looking after your world.
EX BG Technical engineer with a cconscious