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TBH I've never used a ford or other viscosity cup so I couldn't say, I just thin it until it 'feels' right

edit: I shouldn't say never, I have tried a couple times as they come included with the apollo I just thought it was a waste of time and another thing to clean.
TBH- same for me, but for multiple cups and consistency (of consistency) it would take some of the guesswork out of it.
 

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Thanks for the advice. When you say until the drops are one second apart, do you mean after the initial stream drips from the stick?
A ford cup measures viscosity. #4 is an orifice size.
use a stop watch and time how long it takes to drain from cup. Thin to about 8 seconds. I’m not an expert in this method.

The stick method is a visual guesstimate. Thin paint until it flows off the stick the same way every time- coco’s suggestion was to space the drips about a second apart.
 
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