r/Diesel

▲ 36 r/Diesel

Off road diesel

I drove past a truck stop today & saw they had off road diesel. I know you’re not supposed to fill up your truck with it but would I get in trouble or would something happen if I filled my truck up with it?

reddit.com
u/scottarellano — 21 hours ago
▲ 2 r/Diesel

DEF in Fuel tank

How Fuqed am I? 2023 DURAMAX 2500 L5P all stock filled the tank completely with fresh Diesel and then in a brain dead moment while distracted inadvertently added 2.5 gal of DEF to the tank. I realized what I did immediately so I didn’t drive it.. only ran it long enough to move it away from the pump. Can I get away with simply draining the tank, flushing the lines and replacing the fuel filter? Thanks in advance.

reddit.com
u/2Wheeled_2ourist — 22 hours ago
▲ 20 r/Diesel

Keep your lower valance on

When I bought my 2015 F350 (6.7 Powerstroke) in 2020 it did not have the lower valance on it. Most likely, it had been ripped off when the previous owner hit a snow drift. At the time I thought nothing of it, so for the six years I have owned it I have not messed with it. But then I heard that it could affect fuel economy quite a bit, so yesterday I installed a new one. Holy smokes. It raised my MPG from 14 to nearly 16, and the cab is a whole lot quieter. It used to be that if I played podcasts on my phone while driving (no bluetooth or AUX connected) I could barely hear it. Now I can listen no problem while driving. When diesel is over $5/gallon you better keep the valance on, plus it reduces headaches.

reddit.com
u/Big_Concentrate_7260 — 21 hours ago
▲ 16 r/Diesel+1 crossposts

That tune!

Relationships will let you down… 

But a good turbo and a solid tune?

They’ll always give you boost when you need it. 

Less drama.

More horsepower.

Always goes beyond expectations. 

u/Wise-Owl-4236 — 17 hours ago
▲ 7 r/Diesel+2 crossposts

The Feds Are Coming for Diesel Truck Owners. They're Starting With Your Phone

  • DOJ reportedly subpoenaed Apple and Google for data tied to 100,000+ EZ Lynk diesel tuning app users.
  • Focus appears to be on emissions-delete tuning and Clean Air Act enforcement tied to diesel trucks.
  • Vehicle data privacy and how connected apps can become enforcement tools.
  • Federal policy around diesel enforcement appears mixed. Criminal prosecutions may have eased, but EPA civil enforcement remains active.
  • For diesel owners, this is a shift from shop-level crackdowns toward digital tracking through apps, cloud services, and vehicle telemetry.

Thoughts?

thedrive.com
u/lithdoc — 22 hours ago
▲ 15 r/Diesel+1 crossposts

2019 L5P strange noise under acceleration

Kinda like a deep noise- truck is new to me. Hasn’t made this noise all week except for today.

u/Hdez352 — 1 day ago
▲ 7 r/Diesel+2 crossposts

Is it worth it?

2015 6.7 138k miles. Dealership wants 35k
2 owners seems to be dealership maintained through its life according to carfax
Pretty loaded Lariat fx4 package

reddit.com
u/Puzzleheaded-Dare-77 — 18 hours ago
▲ 24 r/Diesel+2 crossposts

Should I buy a E350 Diesel?

Hey guys, I’m front southern Ontario Canada, looking at buying a 2012/2013 E350 with the OM642 3.0 V6 diesel. I’ve heard good and bad things, I know the oil cooler seal is bound to go, intake swirl flaps are useless, and the emissions are better off gone.

I’m currently driving a RHD TDI 6MT Audi a3 which is for sale if anyones looking for something different.

Are the OM642’s worth buying? Someone give me some tips and advice.

u/Old-Development662 — 1 day ago
▲ 7 r/Diesel

Centrifuge Question

Was curious if this centrifuge has seperated oil and air connection on the side here pictures. Already assuming the cleaned oil comes out the bottom, any clarification would be great, thanks

u/IWagsI — 1 day ago
▲ 4 r/Diesel+1 crossposts

2005 6.0, 375k miles, sounding a bit slow on start up. Anyone run into a slower crank like this? Not able to check for codes at the moment. Runs and drives fine otherwise. Thank you.

u/RPU97 — 24 hours ago
▲ 1 r/Diesel

Drain and fill F350 6.7 2017

So I bought this truck at around 80k km at a dealership and that was the last time the transmission fluid got changed. The truck is now at 250k km and i’m wondering if I will hurt anything if i do changed the
fluid and what are the benefits.

reddit.com
u/UmmDavin — 1 day ago
▲ 42 r/Diesel

Which to buy! Cummins or powerstroke

Need advice on which truck I should buy!
2018 f350 platinum 143k miles vs 2013 2500 longhorn mega cab 100k miles
Both for the same price, California trucks

u/Over_Razzmatazz_640 — 2 days ago
▲ 8 r/Diesel+1 crossposts

What’s this under the hood? 6.7 Cummins

Anyone have a clue what this switch could be under the hood? 2008 6.7 3500 mega cab dually cummins.

Has “on and “off” position, looks like a fuse got burnt up. I have no clue what it is so any help would be appreciated.

u/Mission_Effort4135 — 1 day ago
▲ 254 r/Diesel

POV: Why do you drive a diesel?

Is it worth driving a diesel?

u/O_O___XD — 2 days ago
▲ 3 r/Diesel

30 miles offshore is a bad place to find out you have mystery fuel.

I’m getting the trawler ready for a run across the Gulf, and fuel contamination is my number one anxiety. I just installed a new turbine fuel water separator from aftermarket, got it from US based shipper, it arrived way faster than the usual marine supply backorders. The peace of mind alone is worth every penny.

It has a clear bowl with a protective shield, so I can do a quick visual check before every shift for water or sediment without worrying about bumping into it in a tight engine room. If you’re running a diesel boat, do not skip out on your primary filter.

reddit.com
u/Narrow-End3652 — 1 day ago
▲ 10 r/Diesel

Looking to buy this truck and need some help. Thank yall

I am looking to buy this truck and I’m curious if this rust looks too bad or can been fixed fairly easy. Thank yall for any help. It’s an 2006 dodge 5.9 Cummins.

u/AffectionateBake6163 — 2 days ago