Thread: Increase the gas mileage...what works for you and your ride?

Originally Posted by Bruno

I know many people with converted cars, and this does not seem to be a common issue.
Perhaps newer technology does not have this problem?

Even new technology has the same problem as gas has LPG has not changed and is missing needed lubricants. But as always no one will speak out about that as it is new "sale" and new profit for many shops. Then when you getting to the point your care broke, you considering that was natural, age cause but with use of LPG is not. I`m saying that as I have cousin who own car repair shop and he had to rebuild many car engines which used LPG only.
My advice... use driving time 80% LPG and 20% gas to lubricate engine. There is more aspect of using LPG but I guess it is not auto repair forum :-)

At highway speeds, most of the energy of the fuel that's not wasted heat goes into overcoming air resistance. Modern combustion engines are already very nearly at the theoretical maximum of thermodynamic efficiency in converting fuel into mechanical energy, so things like fuel additives, fancy injector systems and exhaust systems, and the like can at most get you fractions of a percent increases in engine efficiency, without doing something radical like switching fuels or to an electric drive-train or something like that. The most effective things you can do to increase your engine efficiency at highway speeds include lowering the suspension, folding in your rear-view mirrors, keeping the windows up, keeping your tires properly inflated, and keeping it clean and well waxed and polished.

I'm not so sure about all the "technology" making a vehicle more fuel efficient. I say this because a 1/2 ton 1972 Chevy properly tuned and running right will get the same fuel mileage as a 2012 Chevy 1/2 ton. The old truck probably weighed 750 lbs more since it was made of much thicker steel and it wasn't near as aerodynamic AND a common bloke like myself could work on them. This is where my petroleum conspiracy theory kicks in....

Originally Posted by Grizzley1

is there anything you're not an expert on? Distinctive clunk. Indeed. Energy cannot be created or destroyed-ninth grade physics...impressive.

I am a field engineer, which means I've spent my whole life fixing other people's screw ups.. I know a little about a lot of things. I am an expert on a few things.

Originally Posted by Grizzley1

is there anything you're not an expert on? Distinctive clunk. Indeed. Energy cannot be created or destroyed-ninth grade physics...impressive.

I have refrained from making disparaging remarks about you personally. I would appreciate the same courtesy.

I think a programmer may be your best option..I've never had one but know a few guys who use them on their diesels but mainly for the power boost.
It could always be worse...I've got a 2011 F150 Harley Edition and I'm averaging about 14.5mpg I'm lucky to get 16 on the highway.

Originally Posted by Catrentshaving

I think a programmer may be your best option..I've never had one but know a few guys who use them on their diesels but mainly for the power boost.
It could always be worse...I've got a 2011 F150 Harley Edition and I'm averaging about 14.5mpg I'm lucky to get 16 on the highway.

A friend of mine did this to his new Dodge Ram Cummings. He was on the 3rd computer and second mfg. before he got it to work. He was driving away from the mfg. and the computer crashed. He rebooted it and decided to try it on the highway. He opened it up and was doing over 100 mph when it started running rough. He slowed down and it continued to run very rough. Apparently it had not been set up right.

The result, several melted pistons and a voided warranty. I would be VERY careful about taking this approach.

The friend, Jay W5GM, is a programmer and not a tech noob.

You are right, most people go this route for more power and not economy.

Originally Posted by Catrentshaving

It could always be worse...I've got a 2011 F150 Harley Edition and I'm averaging about 14.5mpg I'm lucky to get 16 on the highway.

Sounds like you need to be looking into the same stuff I am...just sayin. That's about the same as I'm getting

I know a little about a lot of things. I am an expert on a few things.[/QUOTE]

Couldent have put it any better

Originally Posted by shooter74743

Sounds like you need to be looking into the same stuff I am...just sayin. That's about the same as I'm getting

I knew it wouldn't be great when I bought it. 6.2L engine...I didnt buy it for good fuel mileage...lol