Oil quickly leaked out of Mazda 929 engine. Diagnosis? Fault?

[BigYoda]

My 91 mazda w/ 170k miles just had the leaky valve cover gaskets replaced, a tune up (first mechanic)and an oil change 6 weeks before that (by a second mechanic). the car just made this nasty noise on the highway and turns out the crankcase is bone dry. an hour later after filling up the crankcase, another different nasty sound happened (sounded like something dropped in the the engine). engine oil light came on and it died and coasted to the side of the road. first mechanic says the oil gushed out a rotted rubber seal and was not related to his gasket replacement or tune up work. no drips or burning smells prior to the car being worked on just leaky gaskets. now i might have a seized engine.

diagnosis? pvc valve related? first mechanic at fault? thank you.

 

[Jess/19]

that noise what you heard was a piece of connecting rod breaking and falling into the oil pan, so you need an engine simple as that

 

[idontgivafork]

why dont you look for the rod hanging out the block,cause if its not there its gonna be there soon.your on borrowed time

 

[HarleyDrive]

only way the oil could get out that quickly would be a holed oilpan or a wrongly installed filter where the rubber gasket wasn't put on right, or even a filter with the wrong thread