Originally Posted by Jeremy102579
can pouring this stuff in your oill filler hole damage the engine at all?
no that goes to your crankcase.
it is recommend that you put 1/4 in through your intake.
1/4 in your crankcase
and the rest in your gas tank.
however i have always put 1/4 in my intake then changed my oil and it has always worked wonders for me.