Start up 1997 ford f150 4.6 liter runs rough and misses out,then oil gauge goes haywire. When it runs down then road after 10 minutes are so it then drives ok.

Spark Plugs have to be changed every 3 years
Front Oxygen Sensors changed every 100,000 miles
Can't have any Vacuum Leaks -- anywhere on the vehicle
Need to have it road tested with a Professional Scan Tool
& look at all data & get caught up on Preventative Maintenance
Very few people change motor oil 3 or 4 times a year, if at all,
and the Variable Cam Actuators fail, as a result,that & few other
things can cause rough running engine & resulting idle issues
It's well known that Ford COP Ignition Coils fail sometime in
every year of ownership

change the fuel filter and check the fuel pressure

could be crankshaft sensor or fuel filter,check air filter.

You will need to get a pressure gauge for testing oil pressure, though I would put money on the oil pressure switch or gauge. you could be facing a new oil pump.

this sounds like the engine oil cooler hose was leaking.

DO NOT run the engine again until you fill with oil.

start the engine and look for the hose that is leaking.

My truck does the sme thing I have been putting lucas oil treatment in it with oil changes and it prevents the rough running when first cranked.

You might want to go to a electrical shop to have your car hooked up and have it tested for either a short or a loose or bad wire or connection.

If your exhaust smells like sulpher and the exhaust coming out of the tail pipedoes not stop immediately after engine is turned off. Your catalyctic converter is restricted. Have chk'd by muffler shop

have you looked at the ignition switch?? 97 was a bad year for them!

Do you have a blown head gasket? Just a guess. If you do this is one of the symptoms. You may have some coolant in your oil. Check your inside the valve cover for water by looking in through the oil cap.