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MDS Multi Displacement System Discussion


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  #1  
Old 06-23-2015, 09:02 PM
valleythunder valleythunder is offline
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Default MDS Disable??

Anyone disabling the MDS function? I know the GM 5.3's get way better mileage, and don't burn (err the correct marketing term is use) oil with it disabled.

Kind of surprised to see it on the 6.4L, but hey the marketing program has worked thus far......
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Old 06-23-2015, 10:57 PM
Derag2 Derag2 is offline
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I think the mds does help depending on the road. I can get up to 22mpg on flatter roads where the mds kicks in.
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Old 06-28-2015, 11:11 AM
valleythunder valleythunder is offline
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Derag,

Do you burn much oil with this system? As I stated I owned a 1500 Silverado and GM is happy with burning 2 qts in an oil change. UNREAL to me, in fact the new models have changed the dipstick to increase initial oil volume.
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Old 06-28-2015, 02:11 PM
Derag2 Derag2 is offline
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I haven't check I guess I'm only at 10k on the motor.
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Old 01-09-2016, 12:14 AM
BlackOut6.4 BlackOut6.4 is offline
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My old 2013 5.3 Chevy with the fuel management system didn't hardly burn any oil, I'd say 1/4 quart max between 5000 mile oil changes running Mobil 1 which I started running from the 5000 mile mark.
At first I would say I didn't notice it going from 8 to 4 and back, but after owning it for 3 years I could always tell.
I'm sure it helps on fuel mileage, I just wish that there was a driver controlled switch to turn it on-off!
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Old 10-11-2017, 08:19 PM
Hbhemi Hbhemi is offline
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Haven't burned any oil in over 2500 miles. Don't think my driving style allows much mds activation though.
Been burning gallons of gas instead!
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