Prolonged idling is generally considered not to be good for these trucks. The idle speed is to low. If you could get the idle up to about 1,500 rpm it would be a real improvement. Although this truck will not see winter roads my last (now rusted away) diesel did. All I really did was start it and get oil pressure up where it belongs. I might use high idle for a minute or so and then take off. I noticed on this truck I need to give some throttle for a minute or so in cold weather so the truck will idle above 500 rpm. When it warms up enough to idle well I take off. You may find you want to idle in neutral to refill the tc if you hesitate at first instead of taking off normally.O
I run all fleetguard filters with Rottela T6 change every 7k
Fuel filters every other oil change
Should i be using some sort of additive ( like fuel injector cleaner every so often)
I always plug it in when its real cold and i always let it warm up until the temp comes up to 140
Now what is the "Right" way to drive these trucks in order to get decent mpg and let the engine last long.
Some tell me me to mat it and drive it hard because "thats the way diesels like it"
Others tell me to drive normaly or grandma it for best mpgs. :S:
I only get 17-18 combined driving with 245/75/r16 and 3.5 gears automatic 4x4
Please dont make fun of me, im just trying to do things right
I would install a fuel pressure gauge (one that says oil pressure will work if you do not tell it that is not oil it is checking). Make sure you install something to smooth out the fuel pulses or it can destroy the gauge. That way you can see when fuel pressure drops and change the filter when it is needed instead of by mileage. You might go 100,000 miles and not plug up your fuel filter or it could get clogged from bad fuel in under 1,000 miles.
Additives except for anti-gel (in winter for summer fuel) are generally not needed.
My truck is a dually. I push around 2 more tires than you do.
I drove for good acceleration. I was accelerating at 2,000 rpm perhaps even 2,100. Driving locally I got a 16.25 mpg tank. I was unhappy with that number.
I watched my tach. I kept it at 1,250 to 1,500 rpm while accelerating. For 3 tanks I got 19.+ mpg.
That tells me that accelerating slowly saves fuel at least on a stock automatic.
Driving the truck home about 1,850 miles I got 23.5 and 26 mpg driving 1,500 rpm and 54 mph. I did 1,600 rpm once and get 1-2 less mpg. Close to home I pushed the speedometer up to 70 and about 1,900 rpm. I got about 18 mpg.
That told me that driving slower saved more than enough money to pay for a hotel room if it took an extra day of driving slower to get home.
One thing that will help mpg is a better torque converter. The stock one is about 65% efficient. A good aftermarket version is about 90% efficient. I was told that can be good for 1-3 mpg alone. Getting a tc with a stall speed of about 1,700 to 1,900 will also help you not to accelerate uselessly at 2,100 rpm and barely move forward.
Diesels like to run warm. However, whatever they like to do they drink more fuel when you are at higher rpms ( at least empty as a heavy load can change things).