anyways, we should take this to PM's as this is off topic.

My apologies to the original poster.

 

I don't really want to get into a long back and forth over this, yes the trucks were specced the same except for the engines (different tire brands but very similar tread styles). Go to www.dieselinjection.net and read Bruce's articles. He explains much of what makes diesels efficient and powerful and the effect of fuel pressure on fuel economy with diesel engines. Powerful and large displacement do not necessarily mean poor fuel economy. Percentage of available horsepower used and fuel pressures required to maintain RPM have large impacts on fuel economy. If a driver has foot on floor with any engine mileage will be poor.

Oh yeah, find one driver anywhere driving WV, PA, western MD mountains weighing 65,000 - 80,000 with a M11 getting 8 mpg.

 

http://www.classadrivers.com/phpBB2/...ic.php?t=29072

 

I wonder if anyone running tanks full time is getting 8mpg?.....I doubt it.

 

give highway transport a call and ask them. Iworked for them a short them and all their trucks have them. they install them theirselves,but I dont know whee they get them. I may be calling it the wrong name but it seems like it is called hydropack.

 

Fredog,

I will try and contact one their terminals and see what I can find out. I sent you an e-mail.

Thanks again for your help.

 

Hydro-pack weighs more than a standard set-up, BUT the upside is the ability to reverse the pump, although I have never needed to do that in 20 some years of doing chemicals, other than that it can be more costly to fix one because of the hydraulic drives and hoses that are used.

My air compressor is 17 years old, as is the PTO that drives it, my original pump was also that old, BUT I recently replaced it when I got a "deal" on an almost new Ranger pump.

Most of the large carriers have gone to the hydro-pack because of ease of installation and no other reason, also they are MORE costly than a PTO driven set-up, but then the carrier doesn't care about the cost when they pass it on to the O/O.

Best bet would be to find your own stuff, its out there, just need to know where to look.

As far as the smaller engines for better mileage, it has been proven WRONG too many times.

I'd like to see an M-11 run I-79 in WV grossing 79K with a smooth bore tank, should be good for a laugh. Or better yet, I-68 thru Md.

Remember in your quest for fuel mileage that TIME IS MONEY also, sometimes you just have to push the pedal DOWN to get the job done.

Why take 5 hours to do a run at 55 MPH when you can do it in 4 hours at 60, to save what? $15 is that all your time is worth.

And I still say the DRIVER and NOTHING else controls the fuel mileage NOT the engine make or size.

 

 

Some engines are more efficient at turning fuel into horsepower, that's all there is to it.

Like I said, take the same driver, put him in 10 different trucks, he'll get 10 different fuel mileages.

 

Thanks again for the information.

Be careful and stay safe!