Extreme Mileage Issues?
Alright I know nobody buys trucks for mileage, but I went from my average of around 14 miles per gallon city down to around 8 miles per gallon city, and I have not changed anything on the truck. Just redid the oil with a K&N oil filter, full synthetic (5w20, i think, had a mechanic do it). Truck has 71,419 miles on it
2008 Ranger XLT
4.0L SOHC V6
5 Speed Automatic Transmission
4.10 Rear Gearing
K&N Drop in Air Filter - Flowmaster Exhaust (Muffler) - Magnaflow Twin High Flow Cats - Diablosport Tuner (i used to get 14 MPG with all of these parts)
Does the engine need a tune up? Plugs, wires, coil?
I run injector cleaner and seafoam through it twice a month
2008 XLT - Rest In Pieces...Totaled on December 7th 2013 in Wauwatosa Wisconsin in a snow storm
Now driving a 1997 Honda Accord EX Coupe