Ford recommends using 91-octane or higher premium fuel for optimal performance but can run on 87 as a minimum requirement for 3.5 eco boost
Does anyone use premium gas and have you noticed any significant changes?
Is this the normal color for old coolant? Owner manual says to change it every 3 years or 60k miles, it’s about time I was going to wait till December but I saw this.
I know that coolant may discolor but I assumed it would get slightly darker not brown, does this look normal for old coolant?
Recently my F150 RPM meter has been going up & down when I start the engine, it’s not every time I crank the engine, it’s the 3 rd time in 3 days of multiple different engine starts, the RPM still reads 0.9 & then it stabilizes at 0.7 how it’s supposed to be but the bar goes up and down only in the start.
It doesn’t happen again once it stabilizes even after idle.
The only thing I can think of is that a went on a 1 month trip and disconnected my battery but I don’t
Know how that would affect the meter, also I got back a week ago and it just started doing this Friday