Very true, if not very obvious to some. I do like to keep an eye on tire pressures, though, for reasons other than just fuel economy.Whatever is printed on the door card. You are doing things to save tiny slivers when just improving your driving will save you a slice. These are the kinds of things you do when your driving improvements won't/can't yield any better results.
A clogged filter will not pull more fuel. That is the definition of clogged. Won't let anything through. If you are saying it passed more fuel when changed, well yeah a clean filter will do that.My 5houghts are the car sat and the filter may have taken on moisture with mold growing causing the filter pores to clog. Which in turn yielded the car to pull more fuel.
That’s just an incorrect statement. The maximizing of the A/F ratio is done by the oxygen sensor & the feedback controls. Stoichiometric fuel mixes come from the emissions system toggling rich/lean to achieve stoichiometricity & thus maximizing the air/fuel ratio. A plugged or restricted fuel filter will usually affect power, but you can still have a maximized air fuel ratio.Whatever you guys wanna think, changing the clogged/dirty fuel filter will maximize air/fuel ratio and as result, gas mileage will increase.
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So. I’ve been meaning to post this for a while now.LOL, you guys kill me. Seriously, if any 4 cyl TDI was getting 29 MPG you'd have a constant black cloud following you around. There simply isn't any way the engine could consume that much fuel. Or you have a fuel leak.
But the mileage issue has been constant since I bought it in Feb. The check eng light issue with the DPF is just within the last week. I’ve been tracking the mileage since I bought the car 5 months ago.I read another post saying clogged dpf's can cause this. Either not regenerating properly or clogged or something else broken causing this to occur.
Well. I’ve got a 2013 Jetta Sportwagen TDI that is currently getting 23 to the gallon. Yup. It’s been that way since I bought it in Feb of 2019. I’ve checked every tankful for months & thousands of miles. It’s crap.LOL, you guys kill me. Seriously, if any 4 cyl TDI was getting 29 MPG you'd have a constant black cloud following you around. There simply isn't any way the engine could consume that much fuel. Or you have a fuel leak.