MDS turned off

[T Jones]

New to the Mopar life, I always put my truck in manual mode 6 when I drive it to disable the MDS. What are the advantages or disadvantages of doing this? Does it make any difference in cam/lifter failure issues? Know it is supposed to save fuel but I don't really care about that.

Excuse me. It's been a while since I've posted on this site. But for me, I turn off my MDS and manually set it on 4 when I'm driving in town or in the city where there's lower speed limits, traffic lights, and a lot of stop and go traffic. Also, if I'm on a highway where there's a lot of hills and sharp turns that slows you down, I'll leave it off and set it on 4. On freeway and straight highway driving at higher speeds I leave the MDS on and let it do iis thing. I've had no issues whatsoever driving my 2014 that way. My two cents.

 

[Silby]

Excuse me. It's been a while since I've posted on this site. But for me, I turn off my MDS and manually set it on 4 when I'm driving in town or in the city where there's lower speed limits, traffic lights, and a lot of stop and go traffic. Also, if I'm on a highway where there's a lot of hills and sharp turns that slows you down, I'll leave it off and set it on 4. On freeway and straight highway driving at higher speeds I leave the MDS on and let it do iis thing. I've had no issues whatsoever driving my 2014 that way. My two cents.

I too have a’14 and run it in 4 in town because mine really chugs in drive. I go back and forth on the highway from 8 to MDS, depending on the hills.

 

[StateOfMind]

I am of the opinion that RAM causes lifter failure, but they've fixed it finally - by killing the Hemi. I love my truck far too much to worry about it constantly, I just maintain it the best I can, change oil way too often, and drive it like I stole it now and again

 

[Mojo88]

I am of the opinion that RAM causes lifter failure, but they've fixed it finally - by killing the Hemi. I love my truck far too much to worry about it constantly, I just maintain it the best I can, change oil way too often, and drive it like I stole it now and again

Yep, I had same opinion of my GM vehicles, with their crappy AFM lifter failures. I was changing oil wayyyyyyy too often, but it worked! No lifter failures for my GM vehicles. I probably just jinxed myself for this Longhorn, haha.

 

[black89]

I wonder if mds turns off rear cylinders?

If so causing that part of the exhaust manifold to cool more. Then when mds shuts off when climbing a mountain pass the rear of the manifold heats up alot so higher fluctuating thermal differences causes more exhaust manifold warping, bolts breaking...?