Some dealers will try and scare you into getting service work done by them. I am a trade qualified motor mechanic and have lost count of the engines,gearbox's,4wd front and rear axle assemblys I have rebuit and also have fitted or repaired just about every other part of a vehicle. And yet my local caravan repair centre tried to tell me I was not qualified to service my last Jayco Dove camper.I was in buying some parts and mentioned to them that I had just replaced the XYZ china bearing company wheel bearings with quality Timken bearings and they said I would void my warrenty for the whole van.I asked them to show me their staff trade papers (they could'nt find them) So as other members have said dont be bullied into paying dealer prices as long as the work is done by person with sound mechanical ability that is ok.
This and SD's post is my point . Iam amazed they get away with it in this day and age. lets look at it another way.
Van brakes worked on by Tim the knock about do anything dogs body at the van dealership, van brakes fail and you have an accident and kill someone, coroners inquest and it is discovered Tim is nothing more than a good bloke with no qualifications???????????????????? good luck to that princpal.
Go to a mechanic guys thats what they are qualified for, i am not saying they are neccesarliy better than doing it yourself but they are at least licenced to do it, or ask your dealer to tell you which qualified mechanic will be either doing the work or overseeing it, ask for the mechanics number.