Walmart has the 5quart jug for $19 something if I remember right, and the extended is about the same410Fortune said:5K I run full synthetic and Motocraft FL-1a filters.
It also depends on how I drive, if I go to Moab and back for a weekend, I will change it before and after the trip, and so on and so forth..![]()
I used to do 3500 miles but with full synth its really not needed I found. With full synth you could likely go 7500 too and be okay.
I run Castro Syntec only because Mobil one is too damn expensive anymore.
Castro is $17, Mobil is $24 for 5 quarts if I remember right
UtahX said:I will start to change at 3000 miles now instead of 4000 miles.