345 oil dip stick marks?

Can someone tell me how far down from the stop the F line is and how much farther past that the airline is? I have to adapt a GM dipstick which is narrower and more pliable to work in my slightly bent dipstick tube. Thank you.

PS.
I have my old stick but it broke at the F line. At least I think it was the F line.

 

Drain the oil, refill with the proper amount, mark dip stick.

 

But that doesn't show me where the empty line is

 

Put 5 qts in run the truck for a few minutes and then let it sit for 10 minutes. That is your low spot. Add another quart and let sit for another 10 minutes and mark that as the full line.

 

Listen for the low, bottom end knock, when you hear that, you will know it's pretty much empty.

 

I used to be able to tell how low the oil was by the size of the blue puff at startup

 

I really don't think you want to know where the 'empty' mark should be. By then, it will be too late to make any adjustment!

 

That's probably the best method, and the least destructive method.

There should be no "empty" indicator obviously. Typically, "Low", or "Add" as it's sometimes marked, is a mark one qt below full. The engine should still run well when a qt low, but it really should be above that line for safe measure.

 

BTW... the airline??? What is that?

 

spell check for addline is my guess ...

 

Makes sense. Couldn't tell if it was a really weird way of referring to the dip stick tube. (That wouldn't have made any sense either in the context.)