oil level

first of all, why did the engine blow up? was it lack of oil, timing chain failure or other? if something was done wrong at the oil change, whatever happened would have been right away. Any more info would be helpfull. Roy

lack of oil not in the sense no oil had to have some oil or you are right would have blown up sooner as long as oil can be picked up by the oil pump it will have some oil pumped to the bearings crank cam bearings ect.