Low oil shouldn't affect the starting of the engine (Unless oil has completely run out and engine has seized) better keep oil at correct level though. Starting rpoblem is related to something else like distributor, plugs, lead or starting motor itself.
if it is a new ford focus then no, alot of new cars have regulators on them.
Where is the oil pressure switch on a Ford F-150 4.2L engine?
My wife has a 2011 f-150 5.0 l and have never have to add any oil between 3000 mile oil changes.Once it was half a litre low just before the service
Ford did not start using the 5.4 in the F-150 until the 1997 model year
In a Ford F-150 , 4.6 liter V8 engine : Since Ford started using it in the 1997 model it has always been ( 6.0 quarts / 5.7 liters of engine oil ) with engine oil filter change in a Ford F-150
How many motor oil quarts in a 1998 ford f-150 4.2 liter?
what is the oil pressure for a 98 ford f150 4.2l
Motorcraft
The engine oil dipstick is on the DRIVERS SIDE of your 4.2 liter V6 engine in your 1998 Ford F-150
The best kind of oil to use for a Ford E-150 would be Champion Blue Flame. For older engines a good oil to use is the Delo 15w40.
( 5 W 30 ) for your 1997 Ford F-150
A little more information please Model year of Ford E-150 , engine size