I tend to agree with this. The manufacturer is within their rights to expect that a qualified person has performed maintenance on the vehicle before they can be expected to cough up for a warranty claim.
I’d both agree and disagree in part.
Yes, the manufacturer is within their rights to require that qualified people service the vehicle but they must also attribute the failure to poor workmanship or faulty parts. They can’t simply say no warranty applies because you changed the oils and filter when your problem is with a window which won’t open.
Obviously, in this case, it’s a little more complex and likely a loosing up hill battle but they must find some fault in the workmanship or parts used.
I’d have a discussion with the dealer about the cause of the failure. IIRC some VE/VF commodore V6’s had issue with oil pump o ring leaks and bypass valve sticking... so the cause of the failure should in the first instance be identified.
That would not break it, but incorrect backyard diagnosis resulted in the engine blowing up in this case. In theory, a qualified mechanic/dealer might have queried the pump especially when the oil level was fine and avoided this disaster. OP decided to pursue this himself and it backfired. Sometimes you just cop it on the chin and learn from your experience. Trust me...I ve been there
I’ve read on these forums how dealers have sent people home to monitor a condition causing odd mechanical engine noises, starting problems and injector misfire. So dealers diagnostics aren’t always crash hot and their advice isn’t always the best.
At this point the OP hasn’t been exactly clear on the conditions related to the warnings he had, how he diagnosed and how long he drove it in this condition. He was told clearly that he’s not covered because he bought it second hand (presumably privately). If he bought it secondhand from a dealer, I’d call bullsh!t on such a view as he would be covered by probably the remainder of the factory warranty or statutory warranty.
But back to DIY oil changes. Imagine if you changed the oils and filter and Holden used this fact as an excuse to not fix your piston slap issue. You wouldn’t be happy and rightly so.
As such, let’s cut the OP a little slack and not simply slap him down and find blame in what he has done. He may not have done anything different to what any of us may have done given the story so far.