heard of it, was good back in the hay day when Model T fords were popular.

That's my impression of it.

I think the lawnmower guy on the You Tube did some tests with it.
 
I have used it
I had a lifter sticking
Used it in the oil
And eather it worked
Or the lifter just let loose
I’m going with it worked
But it smells good so don’t try drinking it
 

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