Re-addressing the oil dipstick NAA

[LeoinMI]

After reading the previous post on the oil capacity of a NAA,(5qt or 6qt.) depending on the length of the dipstick,..I got to thinking,(Which can be dangerous for me). I assume if you have the 11.25 inch dipstick ,you must first start the tractor and let it run to get oil into the filter and THEN check the oil level to see if it is on the full mark. Checking the oil cold would result in an overfill on the stick of about 3/4qt since the filter takes an extra quart and drains back into the oilpan..
Am I way off on this or just complicating things? Just trying to clarify for future oil changes.
 

[Dean]

Yes. You must start the engine to allow the filter to fill and then allow the oil to drainback into the pan to achieve an accurate level check after an oil and filter change.

Cold (non oil change) level checks are accurate because most filders do not drain down upon shutdown due to check valves and/or air locks.

Dean
 

[George Marsh]

LEO,
I have an NAA, Jubilee. The spin on filter will drain back only about a quarter of an inch on the dipstick after it sits for a long time. If my menory is correct, I only bought a 5 quart bottle of synthetic oil from Wal-mart. I have a splash left in the bottle because the spin on filter doesn't take a full quart. There was no need for me to buy extra oil, because my engine doesn't use oil. I went with synthetic oil because the filter drains back and takes 10-15 seconds after sitting to fill the filter and build oil pressure. I even use NAPA gold filter, still drains back. Removed filter to confirm it drains back.

If I remember, I'll measure the length of my dipstick tomorrow.

I would think if you put an extra quart of oil in engine, it might come out someplace.

I accidently overfilled a 13 hp honda engine and it smoked like crazy.

George
 

[LeoinMI]

I have the original style filter on my NAA George with a Wix cartridge filter inside the canister.(See attached Picture). I just assumed the original canister filter drained back somewhat due to it being on a 90 degree angle to the engine block. Thus causing a higher reading on the dipstick even when checked cold.

 

[JMOR]