Hi, I got a 2006 dakota with a 4.7 liter high output. The owner manual
recommends to use premium. with gas prices going up, i am tempted to use
regular. would that affect performance or hurt the engine? Any advise is
It will have an effect on your performance, as the engine will retard the
ignition timing to combat knocking, resulting in less power. It won't
actually hurt the engine - that's the whole purpose behind knock sensors.
Yep - all of the x.7L's have knock sensors (so does the Viper's 8.3L). Two
of 'em, bolted to each side of the engine block.
You're correct about the 3.9/5.2/5.9 (and the 8.0L as well, contrary to what
a former member of this group espoused) - no knock sensors there.
tha e truc was designed to run on higher octane fuel and if you don't
it could set a check engine lite and the pinging does do damage over
time the louder it is the worse it becomes knock sensors are not
desinged to counter that effect
i have a rt and a mopar hipo pcm and also i'm suppose to have premium
fuel but i use a octane booster that is cheaper than the premium gas
and have good results
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