I am trying to develop a simple primary screen to distinguish between good and bad fuel additives in fuel.. good additives prevent intake valve stick in the cylinder head of engines. bad additives promote stick

Hi

I am trying to develop a simple primary screen to distinguish between good and bad fuel additives in fuel..

good additives prevent intake valve stick in the cylinder head of engines.

bad additives promote stick

There is a full engine test to screen for good additives, but it is v expensive, and I wish to develop a simple cheap test that I can use to screen many samples.

Can you help with any ideas i can work with ?

Thanks