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Started By
Message
Ot mechanics: gas mileage issue
Posted on 3/23/15 at 7:33 am
Posted on 3/23/15 at 7:33 am
Just recently had my oil changed and went with a high mileage oil, synthetic, and I noticed after that my gas mileage started decreasing. As of right now it's about 50 miles off from what I normally get a tank. What could be the cause of this. It's a Ford focus 2.0 2005 with about a 129,000 miles...the only things I have had done to it is change the alternator and the thermostat since I've had it. Any ideas (other than bashing a particular brand of vehicle, it's been good so far) Thanks!
19
Posted on 3/23/15 at 7:35 am to CENLALSUFAN
quote:
bashing a particular brand of vehicle
quote:
It's a Ford
Posted on 3/23/15 at 7:36 am to CENLALSUFAN
You need to drive double the speed limit to maximize gas mileage
-meaujeaux2
Tks captain
-meaujeaux2
Tks captain
This post was edited on 3/23/15 at 7:47 am
Posted on 3/23/15 at 7:36 am to CENLALSUFAN
Wat?
I have never remotely heard of a different oil affecting gas mileage.
There's another underlying issue.
I have never remotely heard of a different oil affecting gas mileage.
There's another underlying issue.
Posted on 3/23/15 at 7:38 am to TigerHam85
That's what I was asking, didn't know...but I did hear that high mileage oil is thicker and could cause a loss of gas mileage.
Posted on 3/23/15 at 7:40 am to CENLALSUFAN
Sounds like you have a warped Johnson rod.
Posted on 3/23/15 at 7:41 am to CENLALSUFAN
quote:
It's a Ford focus 2.0 2005 with about a 129,000 miles...
Posted on 3/23/15 at 7:42 am to CENLALSUFAN
When did you change the thermostat? A faulty thermostat can actually affect gas mileage. Oil can have an effect also if its a different oil than you normally use (especially if they put the wrong stuff in there)
Posted on 3/23/15 at 7:44 am to ksayetiger
meaujeaux2
Posted on 3/23/15 at 7:45 am to The Mick
Thermostat was a few months ago...hadn't had a problem up until now...maybe it's the oil..hadn't notice a decrease in acceleration power(the little it already had, lol)
Posted on 3/23/15 at 7:48 am to CaptainsWafer
I edited. Hadnt had caffeine yet
Posted on 3/23/15 at 7:48 am to CENLALSUFAN
quote:
As of right now it's about 50 miles off from what I normally get a tank.
how many miles do you normally get per tank?
have any of your driving habits changed? less highway etc?
Posted on 3/23/15 at 7:50 am to Topwater Trout
Usually sit 320 when the light comes on and I'm at about 253 right now..and is close to coming on now...nothing really changed..
Posted on 3/23/15 at 7:52 am to CENLALSUFAN
Are you getting a different gasoline blend?
Higher ethanol will lower your mpg. I was told Walmarks gas has 14% and realy affects the miles per tank.
Higher ethanol will lower your mpg. I was told Walmarks gas has 14% and realy affects the miles per tank.
Posted on 3/23/15 at 7:54 am to CENLALSUFAN
We're you running conventional oil before, or just a regular synthetic?
Posted on 3/23/15 at 7:55 am to CENLALSUFAN
quote:
129,000 miles...the only things I have had done to it is change the alternator and the thermostat since I've had it.
well.....if you haven't changed the air filter yet, i'd start there.
Posted on 3/23/15 at 7:57 am to CaptainsWafer
Conventional..just made the switch to synthetic...
Posted on 3/23/15 at 7:58 am to CaptainsWafer
y'all some roof-less motherfrickers 
Posted on 3/23/15 at 7:59 am to CENLALSUFAN
I've heard that switching later on is not a good thing, but never really heard why (just crappy mileage or damaging the engine). That might be it right there.
This post was edited on 3/23/15 at 8:00 am
Posted on 3/23/15 at 7:59 am to CENLALSUFAN
You need to change the air in your tires.
Old air = lower gas mileage.
Old air = lower gas mileage.
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