Lost all oil and oil pressure while driving (Need help diagnosing)

OK perfect. So it has no 90 degree adapter. I would remove the filter and inspect to see if it has two gaskets on the filter. If it does, there's your problem. Make sure one of them is not crushed beyond use and press it back into the filter and throw the other one away. Screw the filter on tight and fill it with oil. You should be good. OR you could put a new filter on. Either way, make sure there's only ONE gasket, if there are two there when you remove the filter.