Follow up question to the Holly Yammaha Batman question

[SmokyMtnGrady]

I have had a F150 and put over 500 hours on it without a problem of course doing regular maintenance. I now own a F250. I have never used Ring Free in either motor. Is this a product necessary for 4 Stroke motors? If so, then what time or hour frequency do you all recommend I add Ring Free? Every tank? Every 10, 20, 50 hours? Thanks for the tips...

 

[NOTHING ELSE MATTERS]

I really don't know if it works or not, but i use ring free and startron every fill up for a lot of years now. I never had engine problems but also people who don't use it say they don't have problems with their motors. I just feel safer using it because i really don't know what kind of crappy fuel i'm filling with.