ROGELIO A GUZMAN
Full Access Member
Hey fellas. Any tips to get better mpg. Getting about 13.2 mixed. Maybe a drop in K&N, synthetic oil. Iridium plugs. Just wondering if any thing I can do. Thankz in advance.
Any tips for better mpg
- Thread starter ROGELIO A GUZMAN
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
wjburken
Supporting Member
Keeping your drive train properly maintained with fresh fluid will help with MPG’s. When was the last time you had the fluids changed in your differentials, transfer case (if 4WD), or transmission?
Outside of your drive train, you mentioned plugs, but I’d also go with new wires as well. Might clean your throttle body as well.
Then of course, there is proper inflation of your tires.
Others will likely offer other suggestions as well.
Outside of your drive train, you mentioned plugs, but I’d also go with new wires as well. Might clean your throttle body as well.
Then of course, there is proper inflation of your tires.
Others will likely offer other suggestions as well.
OP
OP
ROGELIO A GUZMAN
Full Access Member
Thank you. I just got this 04 denali xl. I'll start with all the fluids and follow your recommendations.
drive it like gramma and you will get better mileage
S33k3r
Full Access Member
Is your Denali All Wheel Drive (AWD)? If so, you are losing 1 - 2 MPG there. Things I've seen in other forums are proper maintenance -- plugs, wires, coils, -- a professional tune, and driving like @Doubeleive says. If you do the professional tune, I've heard higher octane tunes (93 for example) can reclaim a mile or two to the gallon.
Oh! Almost forgot: Converting to eFans will likely reclaim you about .25 to .5 mpg, as well as a few other benefits.
Oh! Almost forgot: Converting to eFans will likely reclaim you about .25 to .5 mpg, as well as a few other benefits.
PNWYukon
Full Access Member
The only way to get significant MPG increase is to buy a Chevy Metro and paint Denali XL on the side of it. 
wjburken
Supporting Member
Waiting to see if the MPG wizard of the West Coast whos name shall not be mentioned is going to chime in on this and regale us with amazing stories about his Hydrid.
bill1013
Full Access Member
Sometimes just boosting the the octane to 93 helps wonders. My 2012 Yukon SLE is getting 17.0 MPG and I put 93 in the tank religiously. Burns hotter, cleaner and a little extra kick never hurts.
There was a time when I came into 110 gallons of aviation gasoline, which is purple and 145 octane. A friend of mine wanted some for his 2 door 68 Ford Torino (metallic green) that he drag raced on the weekends. I suggested 1 quart of 145 to 3 quarts of 93 to start. The kick he got was very noticeable and his time was around half a second better than without it. The only problem was the engine ran extremely hot as 145 does. Didn't matter to him, he was hooked. Next run he mixed it half and half and blew the doors off of the competition. Over a second better than with just regular 93. Well, his third run ended in disaster. He mixed it 3 qts. 145 to 1 qt. 93 and he came screaming off the line. It sounded absolutely awesome...until the engine started coming apart and the car caught fire. The fire was put out pretty quickly and the body wasn't damaged too badly, except for the hood and fender wells. Looked like a gorilla was trapped inside and tried using a sledge hammer to get out.
A little boost in the octane really helps. Burns a little hotter, burns a little cleaner and gives you a little extra umph when you need it. And I get better MPG. And I must admit...on occasion I do fill her up with regular (89) to save a few bucks. Aloha!
There was a time when I came into 110 gallons of aviation gasoline, which is purple and 145 octane. A friend of mine wanted some for his 2 door 68 Ford Torino (metallic green) that he drag raced on the weekends. I suggested 1 quart of 145 to 3 quarts of 93 to start. The kick he got was very noticeable and his time was around half a second better than without it. The only problem was the engine ran extremely hot as 145 does. Didn't matter to him, he was hooked. Next run he mixed it half and half and blew the doors off of the competition. Over a second better than with just regular 93. Well, his third run ended in disaster. He mixed it 3 qts. 145 to 1 qt. 93 and he came screaming off the line. It sounded absolutely awesome...until the engine started coming apart and the car caught fire. The fire was put out pretty quickly and the body wasn't damaged too badly, except for the hood and fender wells. Looked like a gorilla was trapped inside and tried using a sledge hammer to get out.
A little boost in the octane really helps. Burns a little hotter, burns a little cleaner and gives you a little extra umph when you need it. And I get better MPG. And I must admit...on occasion I do fill her up with regular (89) to save a few bucks. Aloha!
Mudsport96
Full Access Member
Making sure the engine is reaching operating temperature is a big one. If its staying cool mpg will suffer.
swathdiver
Full Access Member
My experience has been that the engines run cooler with higher octane fuels. Highest I ever used was 117, don't know what the equivalent is today, don't recognize the offerings on VPs website. Sunoco's 104 Unleaded was awesome though, I can tell you that, burned about a hundred or so gallons of that stuff way back when!
