HemiTruckClub.com HTC.com Forum Forums Vehicle Maintenance Oil and lubricants talk I can't believe this truck know oil type
HTC.com Forum Forums Vehicle Maintenance Oil and lubricants talk I can't believe this truck know oil typeModerators: MrHemi
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I was using 10w30 and switched to 5w20 like manual says and milage jumped up to 19.
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what year is your truck?
 BlackDragonHemi '07 Dodge RAM 1500 5.7L Hemi MDS 4x4 QC Big Horn Edition |
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Good question. If you have MDS and don't use 5w-20, the MDS won't work. My Chrysler 300C get better than 21 mpg at 80+. My '03 Ram doesn't have MDS, so it will continue to get 5w-30.
'03 QCSB Hemi /A.R.E. Tonneau & Bed Rug /NASTA Step/Nerf Bars /LED light bar & frt turn signals /Vent Shades & 15% Tint White Night backup lights & LED Tails/3d Brake light /Halo & projector headlights / E&G Classics Mesh Grill /Tailgate Easy Lift & EZ Down /WeatherTech frt. Floor Liners /JVC KD-AR780 HU & CH-X1500 Changer /Wheel well liners & splash guards /Homelink console &auto-dimming mirror /Magnaflow Stainless Cat-back /Jetstream Scoop/Power Wire /Hellwig Sway Bar /Flex-a-lite Black Magic Extr. 180 /VR-3 backup camera /Dick Cepek Chrome DC-1s ____________________ '06 Chrysler 300C Vent Shades Bentley Grill Splash Guards ________________ 2008 1/2 Mazda Speed3 Vent Shades Shifter mod Cobb SRI    |
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Filter and Lubrication Consultant |
On a perfect day I've seen 20.5mpg@65MPH. Most of the time it's around 19mpg. Longer trips over hills/mountains it is about 17mpg.
My best to date on a long trip, all highway, I got 22.5mpg doing 55MPH the whole tank. And that's dividing the miles by how many gallons to fill up the tank from the previous fill up. ____________________________________________________ 2003 Dodge Ram 1500 QC SB 5.7L Hemi Express Limited Edition Performance Mods: Bomz Air Intake w/AMSOIL EAAU3590 Air Filter, 295/50 General Grabber UHP Tires, AMSOIL'd EVERYTHING!, Jet Stream, IAT mod, Superchip, FlowMaster SUV SI/SO, Thundervolt Full Length Wires, NGK Iridiums, AMSOIL By-Pass Kit, Power Slot Rotors w/EBC Green Pads, TCM wire pulled, Bilstein Shocks, APS Torque Converter 2500 Stall, Transgo Shift Kit, 195 T-Stat, Helwig Rear Anti Swaybar, Moe's Traction Bars w/Shims, Ground Force 2" Drop Shackles, 6.1 Cam w/Manley Springs, 6.1 Rods & Titanium Retainers, Viper Fan w/FK60 controller, Pacesetter Long Tubes & Y Pipe, Flowtech Exhaust Cutout, ATI 5% UD Harmonic Balancer, 4.10 Sierra Gears, M&H Slicks Best 60ft 1.973 14.172@93.99MPH 345HP/346Torque Future Mods: Custom Grind Cam and Heads AMSOIL Dealer - www.PureSyn.net 877-778-7379, contact me for more info on wholesale or a free catalog.      |
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...I'm about the same as Art in terms of mileage... is it a coincidence that we both use Amsoil?
Stu's Spartan cam-Stu's Big valve heads-4.10 gears-Mark VIII efan-pacesetter LT's-shift kit- RamHammer CAI-true dual exhaust-Magnaflow dumped-dual DMH e-cutout- SC Flashpaq-PSC1 tuner-180 t-stat 60ft - 1.832, 1/8 - 8.39, 1/4 - 13.356@99.12     |
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"Jay" President, South Carolina Chapter HTC.com Engine Specialist  |
Make that three of us. 2003, Std. SWB, SLT, 20", 4:56 gear, AFE CAI, Superchip, 6.1 cam, 6.1 heads, Manley springs, retainers, pushrods, Edelbrock Hedders, 195 T-Stat, 8.2 Taylor, AEM, Power Wire, ARC-1,Amsoil Everything, and more. Veni Vidi Vici HTC.com Titan Killer Club          |
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If I keep my truck under 70 I get 22 mpg pretty much straight freeway driving but if MDS disengaged then I get around 19-20 mpg.....I think MDS is a great thing for these gas consuming Hemi's. I am using non-synthetic oil until my next oil change.
 BlackDragonHemi '07 Dodge RAM 1500 5.7L Hemi MDS 4x4 QC Big Horn Edition |
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..wer gettin mds mileage without mds, wait till you see yur mileage with synthetics (amsoil...hint hint)
Stu's Spartan cam-Stu's Big valve heads-4.10 gears-Mark VIII efan-pacesetter LT's-shift kit- RamHammer CAI-true dual exhaust-Magnaflow dumped-dual DMH e-cutout- SC Flashpaq-PSC1 tuner-180 t-stat 60ft - 1.832, 1/8 - 8.39, 1/4 - 13.356@99.12 |
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Truck of the Month May 2006 Texas Chapter Court Jester  |
13.5
 2007 SRT8 Jeep Grand Cherokee-Red Rock 12.58 1/4 w/MHP-B&G CMR TUNE/ BWoody Intake only mods  |
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I will not go into which type of synthetic oil I will use but I can't wait to use it to protect my engine.....
Are you getting this from freeway driving? I hate to ask what you are getting for street driving....  BlackDragonHemi '07 Dodge RAM 1500 5.7L Hemi MDS 4x4 QC Big Horn Edition |
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Truck of the Month May 2006 Texas Chapter Court Jester |
mix of both, passes everything but a gas station
 2007 SRT8 Jeep Grand Cherokee-Red Rock 12.58 1/4 w/MHP-B&G CMR TUNE/ BWoody Intake only mods |
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"Dave" VP Kentucky Chapter Truck of the Month April 2006  |
I run Mobil 1 5w-20 and cruising on the highway I can get 22 mpg. In local driving I've seen 18 if I keep my foot out of it. Just average overall it stays around 16.7 until I step on that loud pedal hard and frequently.
 2005 RCSB 1500 SLT 5.7 Hemi Ram - 4 inch ram air from fog light hole - Amsoil drop-in filter - AirAid MIT - Taylor shorty wires Flowmaster 50HD SI/SO 3” - General Grabber UHP 295/50 20 tires - Superchips Flashpaq 3815 - Race weight 4795 lbs Best 1/8 mile 9.28 @ Bowling Green - Best 1/4 mile 14.51 @ Bowling Green       |
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Is there any truth or documentation to this? I'm not aware of any "viscosity sensors" that will disable the MDS. I know ford changed from 5w30 to 5w20 5 years ago simply to raise it's CAFE numbers. Factually I believe that is what actually happened here. You will see better mileage with thinner oil. Being old school, I think you don't get as good of wear protection. Besides in the owners manual, for the same engine in the 2500+ it recommends 5w30. |
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I used 10w30 in my last oil change and my MDS still works just fine, kicks in and out flawlessly. Although I do think I'll go to 5w20 next go round for mileage sake. If it's a synthetic, the thinner oil doesn't make that big a difference of wear protection if any I would imagine.
------------------------------ My lug nuts require more torque than your Honda makes! |
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"George" Member, Board of Directors President New York Chapter  |
The no MDS issue will show up in the colder climates.
You guys should be pretty good where you are. If you get a real cold night it may not engage. 2005 Hemi Off Road 4X4 QC, Mopar CAI,NGK 4306 plugs, SRT-10 A pillar,AutoMeter Quad gauge overhead console,DynoTune N2O Control Panel,AutoMeter fuel and nitrous gauges,Gibson Extreme Cat Back System,Edelbrock TES Ceramic Headers, QTP 3" electric cutout, Super Chips tuned 3.92 gears w/Anti-Spin, Lakewood traction bars, Billet "HEMI" radiator insert and Zex Nitrous Oxide See my truck at http://www.cardomain.com/ride/2314060"This ain't your Daddy's Quad Cab" THAT THING GOTTA HEMI???? YOUR ABOUT TO FIND OUT... D500 the ORIGINAL HEMI PERFORMANCE OPTION FROM DODGE (1956)      |
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HemiTruckClub.com HTC.com Forum Forums Vehicle Maintenance Oil and lubricants talk I can't believe this truck know oil type
HTC.com Forum Forums Vehicle Maintenance Oil and lubricants talk I can't believe this truck know oil typeCopyright HemiTruckClub.com 2008