I have long wondered

[harryc]

Do all model A dipsticks have the F in the same location. I just change and add the oil from the 5 qt container and add until I reach the F but on different cars it seems to take more to reach the F

[WHN]

Only takes 4 1/2 quarts on a running engine. 1/2 quart is left in dipper tray.

That should be the end of story.

If finger opening is distorted, reading could change up or down.

I would add correct amount of oil and adjust dip stick accordingly. Enjoy.

[harryc]

I don't check my oil with the engine running

[msmaron]

here you go....both styles and length

[WHN]

Originally Posted by harryc

I don't check my oil with the engine running

I don’t mean when the engine was running, I meant an engine that had already had oil added, ran, and was than drained. Sorry for your confusion. Enjoy.

[CHuDWah]

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Originally Posted by harryc

Do all model A dipsticks have the F in the same location. I just change and add the oil from the 5 qt container and add until I reach the F but on different cars it seems to take more to reach the F

Make sure both ends of the dipstick are fully inserted in the hole - that means the short piece below the handle as well as the long piece with the F.

[jbond]

https://www.oreillyauto.com/flux-capacitor

[old31]

Originally Posted by jbond

https://www.oreillyauto.com/flux-capacitor

The problem with that part is I cant use it in first gear. I have to wait for second gear.

As the directions states it kicks in at 88MPH.

[BILL WILLIAMSON]

Halfway between "L" & "F" is perfect, after the engine "dribbles" awhile.
Bill Halfhere

[Anteek29]

What BW wrote applies to my '29 also!

[hardtimes]

Originally Posted by harryc

I don't check my oil with the engine running

Hey Harry,
You may have figured this out on your own, as I know that you've owned Model As and other fine old cars forever.
I keep enough oil in the crankcase to register HALFWAY between the full and low mark. I think that that would represent a half quart. That way, if you have a engine with leaks or tends to leak, this leaking will lessen or quit somewhat....compared to running full or more with oil.