The 400,s run Regular ! LOLThis thread makes about as much sense as replacing 450’s with 400’s…..jus sayin.
The 400,s run Regular ! LOLThis thread makes about as much sense as replacing 450’s with 400’s…..jus sayin.
Hope your not running regular ! Engine will beat it self to death.I have a 525 also (with a whipple). What should I run?
Always ran 91 to be safe.Hope your not running regular ! Engine will beat it self to death.
riverdave has a warehouse... what's next a magazine?Hey my cig is at riverdaves warehouse, fill that bitch up and ill take you out
![]()
Hey my cig is at riverdaves warehouse, fill that bitch up and ill take you out
![]()
Smart move.I canceled the appointment. We aren't coming out this weekend and given that fucktard Bidens gas prices have gotten even higher, I will keep the gas in it and run.
Smart.I canceled the appointment. We aren't coming out this weekend and given that fucktard Bidens gas prices have gotten even higher, I will keep the gas in it and run.
Smart move.
Smart.
Not my experience with 525’s. They soot like a MF’r with 91.Octane will not make it run richer, My 525,s ran the same reg or prem fuel, It ran a few more RPM with Prem....
Not the experience I have had with many 525’s. Always ran better and cleaner without 91. At Powell elevation on up we ran 87.Waste of time, I had 2 525,s....You would never know what fuel your running by the transom soot, and you should run 91 in that motor. Mercury says to run 89 for advertising...If you run 89 , you timing will retard to keep it from detonating . Any High perf motor that says run regular instead of premium means you can, It will always run better with higher octane. Also my 525 s would pull a little More RPM with Premium .