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Air Filter replacement dropped MPG

b4tn

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garagerog Enthusiast

garagerog

Posted
Posted

No mention if the mpg in question is DIC or hand-calculated, even if hand-calculated a lot of variables can go into questionable mpg figures, pump may shut off earlier at different stations, etc. Most extreme example I can site involves a 2 wheeler, back in the 80's I had a 79 KZ1000 that got roughly 40-45 mpg. On the way home from the Oregon coast, I filled up on a foggy, cold morning. Drove somewhere between 80-100 miles, stopped in a Portland suburb for lunch where it was sunny and around 80 degrees, went to gas up after lunch, and guess what? The tank was still full, so what was I getting, infinity mpg? Not hardly, with the tank being filled with very cold gas and then sitting in the sun and much higher temps, it had expanded that much. My point being that a lot of factors can lead to erroneous mpg figures.

jaxcam02 Enthusiast

jaxcam02

Posted
Posted

 

Heres my 5.3 MPG chart. The best I ever got was highway trips on my OEM 17 inch wheels and general grappler tires. 21.5 MPG in the middle of summer in Florida and up to Tennessee.

 

 

Screenshot_2019-04-05-10-01-32.png

FlipZ71 Enthusiast

FlipZ71

Posted
Posted
On 4/4/2019 at 9:40 AM, b4tn said:

I did an Air filter and oil change this weekend.  I used the same oil I used last time STP 0W-20 Dexos but autozone was running a special for an air filter bundled in so I went ahead and put in an STP air filter as well.  I am used to getting 18mpg in traffic and 20-22 on the highway but suddenly I am getting 13-14 mpg since changing the air filter.  Anyone else have issues with the STP brand filters?  I am not in the market for a CAI but thinking about getitng a K&N or AEM drop in now.  

Perhaps a neighbor let out 15lbs of air from your tires ???? ?

2017Darkness Enthusiast

2017Darkness

Posted
Posted

I love seeing people post up the pictures of the DIC with their mileage over the last 50 miles....set it to 400 for a more realistic read out...

Loco-diablo Senior Enthusiast

Loco-diablo

Posted
Posted
On 4/4/2019 at 1:28 PM, Arch Angel said:

Nothing? stock LT 4x4 crew cab - i drove from Central MA to bronx NY all highway measuring MPG and was getting 28.6mpg going 75-80mph sometimes downing to 70mph clearly speeding (limit in most area's 55-65)  

-- should also note rear of truck was filled with vacation stuff ~ give or take 400-500lbs of junk including coolers/food/etc 

-- inside vehicle was myself heavier guy 390lbs at that time (lost weight now down to 250 woo) wife 160, son who was like 20lbs. and random junk inside cab. 

 

 

 

 i drive regularly to NH/Maine and get 26-28 depending on day/weather etc. 

 

Normal cheap shell gas . 

I live in Worcester, so it's also a hilly area... Most (90%)of my miles are on 290/495.. I average 18-19 mpg average speed of 70.. I've never gotten anywhere near 28 mpg... 2017 5.3 6speed

Sierra Dan Senior Enthusiast

Sierra Dan

Posted
Posted
On ‎4‎/‎5‎/‎2019 at 2:12 PM, 2017Darkness said:

I love seeing people post up the pictures of the DIC with their mileage over the last 50 miles....set it to 400 for a more realistic read out...

Amen.

reardiff Enthusiast

reardiff

Posted
Posted

My best 400 mile average was 26.4 and this is with 6.2.  This was going from Chicago to Omaha last fall, cruse set at 70.  Even the last 400 mile average of 16.6 isn't bad considering that's about 85% city/in town driving.

 

 

image.png.043fa86db02653f8cb412be58bba8c27.png

Arch Angel Enthusiast

Arch Angel

Posted
Posted
3 hours ago, Loco-diablo said:

I live in Worcester, so it's also a hilly area... Most (90%)of my miles are on 290/495.. I average 18-19 mpg average speed of 70.. I've never gotten anywhere near 28 mpg... 2017 5.3 6speed

I'm right outside of worc. drive that area constantly - no drafting behind semi's don't want rocks on my hood/windshield - my next long road trip i'll snag pictures of MPG for you-all :) no joke and no idea how i'm getting it . i don't believe i drive conservatively i pass a lot i coast often have this annoying sound in the passenger seat all day that goes "stop slow ahh " ...(wife) 

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