Over heated my99 ranger v6 3.0
(a few times) I know......I have motor oil in my radiator..but no water in my oil pan(dipstick) cracked head? Head gasket?

 

Welcome to the forum

If you have an automatic transmission then trans cooler is leaking check ATF for water

Simple FREE test for head gasket or cracked head issue
Get a latex glove and rubber band, or a balloon or even a condom

Cold engine
Remove radiator cap
Pull off overflow hose, block this hole in rad cap sleeve with gum, putty, vacuum cap, ???
Put Latex glove over rad cap opening, seal in place with rubber band, or use balloon or condom in place of the glove

Now you want a NO START
So unplug Coil Packs 4 wire connector, easy to do

Now crank engine with start motor and WATCH the glove
If there is a breach in cooling system from a cylinder the glove will BOUNCE
Each time that cylinder is on compression stoke glove will inflate

If it does bounce then start removing spark plugs, one at a time, and crank engine again
When glove STOPS bouncing, last spark plug removed was from the cylinder with the leak
Put spark plug back in to confirm


If gloves doesn't bounce then there is no head gasket or cracked head problem, FOR SURE