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Diesel (Passenger Vehicles) in Hot Climates #5283250 12/02/19 06:20 PM
Joined: Aug 2017
Posts: 489
ad244 Offline OP
OP Offline
Joined: Aug 2017
Posts: 489
Hey all

Just wanted to see if any other members seem to notice a trend in modern diesel passenger vehicles (Cars and trucks) where they and their emission systems seem to hold up better in hotter climates such as the south west?

Because modern diesels heat to burn off catalysts and get up to temp quicker, would this in theory make them last longer?

Re: Diesel (Passenger Vehicles) in Hot Climates [Re: ad244] #5283269 12/02/19 06:35 PM
Joined: Jan 2017
Posts: 3,311
maxdustington Offline
Joined: Jan 2017
Posts: 3,311
I would think the exhaust getting super hot while getting sprayed with salt water in the winter and then humid environments in the summer would shorten it's lifespan considerably.

99 Toyota Tercel CE 5EFE/C151
Re: Diesel (Passenger Vehicles) in Hot Climates [Re: ad244] #5283631 12/03/19 05:38 AM
Joined: May 2007
Posts: 8,260
dnewton3 Offline
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Everything holds up better in the arid southwest ... mechanically, but not cosmetically. The UV will beat the tar out of paint and vinyl and rubber, but the southwest is very easy on drive-train systems, gas or diesel.

The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money
Re: Diesel (Passenger Vehicles) in Hot Climates [Re: ad244] #5283651 12/03/19 06:26 AM
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BMWTurboDzl Offline
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Not really. If anything the plastic components will lose their plasticity at a higher rate in hot/dry climates. Most of the components for the SCR (DEF aka Urea Solution) system are plastic/rubber.

If anything I would think that driving distances are generally longer in the SouthWest so that would bode well for allowing uninterrupted DPF regens.

“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

Re: Diesel (Passenger Vehicles) in Hot Climates [Re: ad244] #5284712 12/04/19 08:03 AM
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BrianF Offline
Joined: Feb 2015
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The cold climate, long idle times and short trips seem to be rough on diesels here. The newer scr equipped ones fair out better...

I have done a mix of everything with my 3500 and the only issues were a DEF countdown that cleared itself while driving and my recent cylinder 1 injector (unrelated but still a mechanical problem).

2006 Trailblazer LT. QSUD, Fram Ultra.
2017 Ram 3500 SLT Megacab. Duron SHP 10w30, Baldwin BT7349.
1993 GMC 1500. QSAD, Fram PH5
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