Oil filler cap cover the hole in the engine where engine oil is added
An oil filler cap is a metal that covers the hole where the oil is poured.
Oil is added on top of the valve cover. There is a cap, that usually says oil on it. Remove the cap and the oil can be added here.
Oil sputter is going to be a normal thing if the oil cap is not on while the engine is running. The engine should never be run with the oil cap open. The engine actually has less compression when the oil cap is open, and this could hurt the engine.
Find the cap at the top of the valve cover. Remove the cap and add the oil.
There is usually a cap on one of the valve covers. There is an oil filler cap, you are just overlooking it. Look closer.
There is a cap on the valve cover that says oil or has a picture of an oil can. Remove the cap and add oil.
Check the oil filler cap or the owners manual for recommended viscosity.Check the oil filler cap or the owners manual for recommended viscosity.
If the oil cap says 5w20, use 5w20. If the cap just has a yellow symbol, use 5w30.If the oil cap says 5w20, use 5w20. If the cap just has a yellow symbol, use 5w30.
Look at your oil cap. The weight is on the cap.
Condensation of moisture mixed with the oil film inside the cap. If oil in oil pan is not "milky" you are ok.
if it is the 3.5 engine large plastic cap on the bottom of oil pan cap is about the same diameter as an oil filter drain oil then remove this cap oil filter is attached hope this helps