Dodge Ram Care and Maintenance
How many RAM owners out there have switched to synthetic engine oil? I just had a oil change at 3100 and I am considering going to synthetic, but I would like to hear some opinions from experienced owners.
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Other than the paint, my Dodge Ram is a real jewel and has become my everyday vehicle in spite of the fact that I bought it mainly as a business truck to move mobile labs in the oil field. Mileage is always over 20 MPG and recently has increased to 22 MPG. Absolutely incredible for a 3 1/2 ton truck!! If only DC could do something to improve the quality of the paint, they would have the perfect truck in my opinion.
I purchased this vehicle Sept/2001 mileage 60000 mi. currently 75000 mi.
I am asking other owners for their input as to if this is normal and what I may expect inthe future?
I do very little hauling, no towing, and use it as a car 99.9% of the time.
Was just curious if they had "softer" shocks available.
My trucks' owners manual calls for 6.0 qts., but it actually used closer to 6.5 qts. I guess the Mobil one filter held a little more.
How often do other Mobil 1 users change their oil?
officeroz
officeroz
My truck is running a little softer now. The dealer had over 45PSI air in my tires. Now I'm experimenting with 33 PSI from and 30 PSI rear.
Regards to all truck loving people
ANDY
Babyboomer hot rodder since 1961
Jay
Regards,
Dusty
The real question should be, what is the actual viscosity at given temperature? It should not be assumed that any or all 10W-30 motor oils will have greater high temperature viscosity characteristics than a 5W-30.
Example: using ASTM test method D445, the Quaker State "Higher Mileage Engine Motor Oil" in 5W-30 is rated at 12.20 centistokes at 212 degrees F, while the 10W-30 Mobil 1 Full Synthetic is only 10.0 centistokes at the same temperature. In fact, the Quaker State 5W-30 meets or exceeds any other 10W-30.
Regards,
Dusty
Paste this URL into your internet browser and take a look. Rick
You definitely do not need this huge truck (Ram 3500) to tow a 5000 lb boat unless you tow it cross country. Seems to me that any Dodge 2WD full size truck with anti-spin rear differnetial would do really well with a 5000 lb trailer/boat load.
You would have to replace the springs to lower your truck and I would not recommend this becuase you would ruin its resale value. Most of the 4WD crowd wants their truck to sit high off the ground. It is true that many people buy full size 4WD trucks only because they sit higher than 2wd ones. This is becoming quite fashionable trend here in central Florida where you really do not need a 4WD vehicle. I see people tow 16 ft boats with 4X4 crew cab diesel duallys, which is a joke. I happen to own a deuce and half Army 6X6 truck - maybe I should start towing my boat with it to make sure I can handle the load and be the attention gvetter at the boat ramp.
UPDATE: My 03, 2500, 4X4, SLT, 5.7, 3.73, 5-speed auto has 21K miles.. Had a transmission flash upgrade 3K ago. It does not downshift as much now. Had truck weighed last month.. 6637 lbs!!!!.. Only thing in truck was a 5th wheel hitch.. Seems like a lot of weight for a 3/4 ton truck..
My RAM is still the best new truck I have owned.. No problems as all.. Do wish I got the 4.10... $2K seems too much to change gears..
Need more people to post reports
So anyway, I cannot figure out why i got better mileage with the heavy load and the OD off. Has anyone else experienced this? This sure seems like something i should be worried about, but I don't know exactly what I'm worried about!
Next week, I'm going to run some 'tests' to see how it reacts on my normal commute with the OD on vs the OD off.
Any insight yall have will be greatly appreciated. I'm not sure if there is a way for yall to find my email address and/or send replies directly to it ... but if you can, DONT do that. The email address i first used to sign up here is no longer valid. Please just post responses to the board.
thanks
-jeff
With the difference between 2100 and 3000 RPM, however, I'm surprised that you saw an increase with the overdrive off, especially with such a light load.
Best regards,
Dusty
I don't understand how the engine see's a decreased load at higher RPM, do you have a link that explains this more fully? Maybe i just dont understand what a 'load' is in this context.
And finally, is 1000-1500 lbs light for a half ton truck? I thought a ton was 2000 lbs. That would mean i was at or over its nominal rating. Although, i think the sticker on the driver-side door lists a gvwr of like 1700 lbs. The GVWR is the actual rating for how much weight i can put into the bed of the truck, right?
thanks
-jeff
In the case of load an engine can see the work-taxing effects of load differently when operated through a gear train. The "load" in this case is your 1000 pounds. Moving it across the ground (work) represents a fixed load to the vehicle platform, but can be a variable or changing load to the engine or any component in the drive train.
At lower RPM the engine produces a relative amount of power, but in most automotive engines that power increases as RPM is increased...within certain limits, of course. Assuming the vehicle is in top or high gearing, at 1500 RPM the load factor on the engine is x and the throttle is opened at x. In this scenario the amount of throttle opening -- or throttle pressure -- will generally be more than the amount necessary to keep the engine at the same RPM without a load.
Even though the actual weight being moved has not changed, at increased RPM the engine's increased power allows the throttle to be close/closer to the momentum speed of the engine, meaning closer to the same relative throttle position that maintains the same RPM without a load.
For this reason it is normal to see a condition(s) where for any given weight being moved by the engine, an increased RPM range will actually be more efficient and hence expending less fuel. Typically this comparison occurs more dramatically at lower vehicle ground speeds, but there is no perfect way to predict this since the combination of weight, speed, gearing are highly variable and a number of engine dynamics will not be very well known.
As to the fact that you have a half-ton pick-up, that delineation is the vehicle platform rating in the form of suspension, braking, and drivetrain ability, much less so the engine's rated power. Most half-ton pick-ups will be rated to tow in excess of 4000 pounds. The Dodge Dakota, for example can be rated to tow as much as 6600 pounds, even though it is only rated to carry 1460 pounds in the bed.
Best regards,
Dusty
As for the load, if i understand you right, you meant that the load was light from the engines point of view (I'm assuming that to the engine, pulling 2000 lbs is practically the same as putting 2000 lbs in the bed). Because the rating for the bed (that is the GVWR, right?) is really the limits of the suspension and braking system? Thats good to know. Next time i get a heavy load in it, I won't worry about the engine so much.
If you're getting better mileage, then maybe you should drive that way. There's no injury to the transmission, in fact higher RPMs in third gear direct offer higher pump pressures that ensure transmission lubrication. The only disadvantage is increased wear on some engine components that -- theoretically at least -- shorten engine life. I'd experiment a while before you decide that driving without overdrive is actually giving you better mileage, though.
Yes, weight to the engine is irrespective of where its at, either in the bed or on the rear bumper pulling something.
Good luck.
Best regards,
Dusty
In recent times many transmissions actually have forward speed ratios that produce faster output shaft speeds than the engine speed. This is a overdrive.
Most vehicles today utilize at least one overdrive as a final ratio. This reduces engine RPM and for most driving reduces fuel consumption. It is part of the normal sequential shift pattern on almost all automatics, and especially so on Chryslers.
The "normal" driving method is with the overdrive engaged. When towing higher than average weights, driving in city traffic or hilly country, it is often recommened to disengage the overdrive.
Best regards,
Dusty
This was found at: Allpar.com
http://www.allpar.com/
Thanks to KerrymanMopar for this information (it is quoted from an unnamed source within Chrysler, it’s by no means official).
“Over the past five years, warranty costs have been reduced by over 40%, and we have had13 straight years of double-digit quality improvements at the Chrysler group. As the overall quality of our products continues to improve, an extended powertrain warranty has become less important to our customers. Ownership trading cycles are decreasing - Chrysler Group research reveals that the average length of new car ownership is 3.5 years. Despite our heavy promotion of 7/70 since 2002, less than 10% of consumers know that we have an extended powertrain warranty. That is why it has not become the traffic driving tool we had hoped. Consumers want new products and new features. What they truly value are our nine new products in 2004 and the many new products in 2005-2006. This is where we want to invest our money. We have decided to eliminate the 7/70 powertrain warranty effective on '06 MY vehicles. The 3/36 will remain in place.
Service Contracts has already developed new programs that reflect these changes and continues to offer an array of products that range in age/mileage coverage and deductible amounts; which allows dealers the ability to customize the contract to meet customer's needs. These plans can be found starting on Page 10 in the pricing and eligibility guide under New Vehicle Plans 3/36 Basic Warranty tab. Our 3/36 warranty coverage is competitive with General Motors, Ford, and Honda.”
I bought the truck after buying the trailer to ensure I have enough truck. But soon as I got the truck re-wired for the new plug away I went to the races, Only to find out that something does not seem right. Ok your not supposed to tow a load (trailer loaded near 4tons) in over-drive so I turned off the over-drive but there is no way I can go past 45mph since the engine is revved nears 2700+rpm. Now this is not a safe speed for long trips (rpm/mph) so I turned the overdrive on thinking maybe it is geared really low, but then its like it has no power and takes a while to get from 45 to 55 and any incline in the freeway even small overpasses bogs the motor down to what i seem to think is a treable engine lug and as soon as it recovers from that another small incline repeat process.....i take it in they say seems fine its the motor....ok......I tke it in the adjust the waste gate turbo injector pump and says seems fine.....So hear i am what to do....Truck seems fine empty around town freeway its just with the trailer in that window of speed to do the speed limit without overreving the engine or lugging it in o/d
Any suggestions or answers? I dont know the gear ratio I can give the vin# if you have a way to find out.
mxracer
Bought Sep 04 with 8 miles on the odometer: Hemi, Laramie edition, including NAV - IMHO, WORTH THE COST! Mine is the CD version - text/icon direction (4aDodge site shows a DVD version with actual maps displayed, but I didnt see it as a Ram option). The NAV works great if you program the destination correctly, as I found out. Compared to a mapquest printout, it gave almost an exact route match and I have relied on it several times when I needed to find an alternate address while traveling, leather, dual climate (wife appreciates that), heated seats (a leather option MUST), 4 wheel ALB, security, Towing Package/HD cooling, Sport appearance (Graphite), 17 in aluminum wheels.
I do my own oil changes, Mobile1 synthetic, and rotated the tires at 10000 miles.
Extras added, K&N filter and Extang full-tilt soft tonneau.
Current MPG with mixed 75 percent hwy/25 city commute: 18.5 average mpg, trip cpmputer still shows approx 20 during full highway trips.
Noises, a minor/random metalic "tick" somewhere around the rear paggenger slider window.. cant isolate, and its infrequent, possibly a loose seam or joint?? Seats, interior trim, no rattles or problems. Dash tight, cupholder has slight bind when being fully lowered, but it's so minor I dont even think about it.
Wind noise, still well within reason IMHO, but a quirk: when the AC fan is off, a noticable wind noise is heard on passenger outside air inlet screen. Turn fan on and it stops.
Engine idle good but can be slightly rough on occasion when stopped in park (tac often shows approx 600-650 rpm) when stopped, but in gear, it usually stays at 500 rpm. I'm wondering if this needs addressing, and I will ask dealer next week when i go in for the one issue I want checked:
Front anti-sway bar endlink has developed a vertical slop, where I hear it popping on bumps at low speed. I can manually push the sway bar up and down next to the endlink bushings and recreate the slop and sound. To me its a loose lower joint. The passenger side it tight.
Overal impression is very good, excellent looks, more than enough power and ride/handling is as comfortable and responsive as I can ask for .. :shades:
ahasher
Thanks
As to reducing the strain on the engine and drive train, locking out the overdrive in certain scenarios is recommended whether diesel or gas.
Best regards,
Dusty