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Reply to "4-Ball Wear Test- Slick Marketing ?"

quote:
Originally posted by Lube MATE:

4 ball test is more applicable for greases and gear oils.


I agree as have some other posters previous to this .
The line of posting got off the original topic when the API was brought into the conversation .

I am not certain paying for the API donut to be placed on a bottle of oil guarantee's the best oil formula / protection /performance available anyway .
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