Anyone know about the antiknocking system of merc ... I dont have 91 only 87 octane, i want to know if i add "sinto racing octane 130"can i run without piercing the block. Fountain 29 600sci xr ssm😁

Never heard of Sinto Racing stuff.

There are proven products that will boost your octane, but they are not cheap.

Boostane, Torco or just blend with high octane race fuel or AV fuel.

"FOND DU LAC, Wis., Oct 8, 2008 – Mercury Racing (http://www.mercuryracing.com) is pleased to announce the fuel requirements for the 600 SCi sterndrive engine package have changed from 91 posted octane (R + M)/2 (98 RON), to a new minimum posted octane requirement of 87 (R+M)/2, (91 RON). The change affects both current and late model 600 SCi sterndrive engine packages. Mercury Racing engineering made the fuel requirement change after reviewing over two years of engine run data which validates that the difference in fuel grade does not adversely affect engine life, power or performance. The only measurable change consumers will notice is a savings at the pump."

http://phx.corporate-ir.net/phoenix....int&ID=1256007

I had 600's and if they came anywhere near anything less than 93 fuel the smartcraft would go into guardian mode.

Thanks !! For a 2010-11 engine does i have to reprogram it??or the initial set up can run 87... I also heard about toulene.. 1/10 raise 4 pts ,dont want to blow it and the difference between 525 are sigificative in the mid range fun😎

Someone run 600sci with 87???

It is the new generation ?