Originally Posted by
pprior
1) the likelihood of a "faulty filter" is probably 1% since they are all factory tested. 99% chance he's bullshitting you
2) Show me the filter - see #1. If 'oh, we threw it away' then again they are lying.
3) Whether they double gasketed it or worse didn't install a filter or the plug, there is no way they can know "no damage done" unless they tore the engine down. Life expectancy would certainly be a question.
They are telling you what you want to hear. Personally I would have insisted on being present when they inspected it, as a new engine is thousands of dollars.