Evening all hope everyone is well, just want some advice regarding oil fault finding. Been told I’m going to be fault finding on oil boilers in my area there are a few grants but mainly Worcester,some new but mainly the older models. I’m going to get my self booked on a few courses with the manufacturers, and do my oftec but just seeing what I’m going into, do gas breakdowns no worries, but as I say a bit nervous as never done oil.Any feedback would be great thanks peeps