Brown liquid all over driveway in winter — oil/fuel or meltwater?

[Rustypipes12]

Hey everyone — hoping to get some perspective from those who’ve seen this before.


I recently noticed a large brown liquid spread across my driveway under my truck. It’s not a tight puddle, more of a wide, thin area, and it shows up in different spots depending on how the truck is parked (backed in vs pulled in).


Truck: 2020 Ram 1500 5.7 HEMI
Recent service:

• Oil change at Conrad’s on 11/07
• Brakes done on 11/20

I’m in the Midwest, and we’ve had below-freezing temps with snow, ice, and road salt. I only noticed this now, which is what has me uneasy — both about the driveway and the truck.


What I’m seeing:

• Brown/amber coloration
• Large spread rather than a concentrated spot
• Snow melting unevenly where it’s present
• Slight chemical/petroleum-like smell when dabbed
• No obvious fresh drips under the truck
• No warning lights or drivability issues
• Oil and fuel levels do not appear to be dropping

Because the spread changes with parking direction and doesn’t form a consistent puddle, I’m wondering if this could be winter meltwater or exhaust condensation carrying road grime, but the amount and appearance are concerning enough that I wanted to ask.


Has anyone experienced something similar in cold weather?
Any common 5.7 HEMI areas I should check to rule things out?


Appreciate any insight — just trying to make sure I’m not missing something.

Diarrhea!

 

[Dean2]

UPDATE: it's the oil pan... Conrads said $1,400 - dealership said $2,200 - insane

I had my oil changed there in November and they didn't even mention to me that this was rusting or anything. That is what seems suspicious.

Rusted oil pan is not unusual. Buy a new one and slap it on. They are a bit of work due to tight clearances. Will be a lot cheaper than the quotes.

 

[4xdad]

wtf is it rusted through.

 

[BurtShaver]

That is sad and disgusting that an oil pan from 2020 has rusted through. Doesn’t surprise me though, metal used is absolutely garbage

 

[Burla]

UPDATE: it's the oil pan... Conrads said $1,400 - dealership said $2,200 - insane

I had my oil changed there in November and they didn't even mention to me that this was rusting or anything. That is what seems suspicious.

gotta get on fluid film avoid more damage, the thread starter Corey aka hemi395 now recommends wool wax as he thinks it may last longer.

I might look into if it is possible to sand it and coat it with some coating.

OIL PAN PATCH REPAIR with JB Weld! Will it HOLD? YES it Worked!!

Trip to Arizona Slammed by Trailer Hitch Receiver in Middle of Interstate 10 Standing straight up Waiting for Me! Will My JB Weld Repair let us cross the De...

youtu.be

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[Burla]

I wouldn't blame the metal, Ohio is having a salt shortage making many locals to use liquid magnesium, just even more corrosive then salt. Fluid film will prevent this.

Corrosivity and Vehicle Damage

• Highly Corrosive: Magnesium chloride is, in many cases, more corrosive than traditional road salt (sodium chloride). It is especially damaging to automotive components, including steel frames, brake lines, and electrical systems.
• Why It Corrodes: It is highly hygroscopic, meaning it attracts moisture from the air, keeping roads wet and creating a continuous, aggressive, conductive saltwater solution that promotes rust.
• Wet vs. Dry: Wet magnesium chloride is more aggressive and corrosive to steel than dry, making it a significant concern when applied as a liquid spray.
• Protection: Many municipal applications now include corrosion inhibitors (often organic agricultural products) to reduce damage to vehicles and infrastructure.

Usage in Ohio

• De-icing: Ohio DOT and local municipalities use liquid magnesium chloride to pre-wet rock salt, which helps the salt stick to the road and melt ice faster at lower temperatures.
• Pre-treatment: It is frequently applied to roads before a winter storm to prevent ice from bonding to the pavement.

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[Burla]

They had a report where contractors where spraying the salt with MC (blue) before spreading it in ohio from the salt shortage. stuff will corrode your metal, read if you wanna know the bad news.

How oversalting Northeast Ohio's roads is impacting waterways: Winter Salt Awareness Week

Here in Northeast Ohio we are used to winter's snow and icy elements -- and one way we prevent the slick conditions is by pouring millions of tons of salt.It...

youtu.be

 

[Dean2]

They used that stuff here for a few years. It corrodes everything and really fast. The bar that holds the nozzels on the spreader had to be replaced weekly. They finally figured out they were doing so much damage to vehicles, roads, sidewalks, rebar, water and sewer pipes that they had to quit using it. They couldn't keep up with the damage.

 

[Burla]

Then there is this, not only is Ohio using MC but also Calcium Chloride that is different from rock salt aka sodium chloride. I'm sure they are probably using rock salt as well, but clearly they are also using MC and CC that are substantially more corrosive then rock salt.

Ohio vehicles face increased safety concerns due to stepped-up calcium chloride use​

was a headline recently in their news... Expect serious damage within 5 years, well there ya go it was a 2020 which are built in 2019 and now it is 2026, so at a minimum it has been 6 years. I guess nothing surprises me anymore, but opportunity lost for manu's to have stainless or aluminum oil pans as optional equipment, my guess every single dude in the salt belt would pay the freight. 2200 for a oil pan replacement, blows donkey balls. Hell I'd happily pay 300 extra from day one and I don't even see snow.

 

[Burla]

Ram 1500 Oil Pan Replacement

** Note that if your truck did not have a lift kit the front differential must be removed for enough clearance to remove the oil pan ***Replacing the rusty o...

youtu.be

It's not that easy unless you have that lift with it. But if you have the lift not too hard, maybe time for a lift, lol.

.

 

[jws123]

UPDATE: it's the oil pan... Conrads said $1,400 - dealership said $2,200 - insane

I had my oil changed there in November and they didn't even mention to me that this was rusting or anything. That is what seems suspicious.

If your pan is this bad check the rest of your frame it is nessisary to wash undersides of modern vehicles. I have to do mine once a week with the heavy salt also gotta coat the underside once a year now unfortunately.

 

[18CrewDually]

This is common and does not happen in one winter. Run them hard and put away wet, this is the outcome in these areas.
Another popular one is rear diff covers. I can't tell you exactly how many rear diff and oil pans I've replaced from Ford Super Duties and Excursions of the era but it has been many. Trans pans too, not as much.

 

[Wild one]

Ram 1500 Oil Pan Replacement

** Note that if your truck did not have a lift kit the front differential must be removed for enough clearance to remove the oil pan ***Replacing the rusty o...

youtu.be

It's not that easy unless you have that lift with it. But if you have the lift not too hard, maybe time for a lift, lol.

.

7 bolts hold the diff in place Mike,you can undo them,drop the diff without pulling the axles and that'll give you enough room to pull the pan.

 

[Grams]

If corrosion from road-treatments are That Corrosive…. no wonder newer vehicles are going to plastic oil pans on trannys etc

Maybe it might be better not to salt the roads and let folks learn to drive in snow …or just stay home when it gets that bad.