Getting mud offf from the under/inside

[PyrPatriot]

So on another Jeep/wrangler forum I was looking at a thread on high mileage 3.6L engines. The only consistent issues people seemed to have was battery and mud caked on and causing parts to fail. One poster said he just sits his Jeep in water from a boat ramp for half an hour. I know there are a couple thorough threads on water fording depth. Other posts say leave a sprinkler on under your Jeep to get mud off. My question is: can you just sit the Jeep running in the water for half an hour to soak away all the mud? Not 30" deep, but maybe something like 24"?

Would using one of those undercarriage pressure hose washers cause too much water to get into places? I recall that the reason you don't drive more than 5mph when fording 30" is to keep water from being forced into places.

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[Factoid]

I use the same little electric pressure washer with the 25 degree head that I use to wash it. Works great and with the Mopar lift and 37s makes it really easy to get under and into all the nooks and crannies. I don’t think I would be comfortable letting it soak is a water bath, but that’s just me.

 

[Alabama Mud Machine]

Back when I was heavy into mudding and off-roading, before we left the house, we'd spray the undersides of the 4-wheelers and trucks with Pam cooking spray. Let it dry, then go off-roading. Afterwards, the mud falls right off with a hose and pressure washer.

 

[PyrPatriot]

Back when I was heavy into mudding and off-roading, before we left the house, we'd spray the undersides of the 4-wheelers and trucks with Pam cooking spray. Let it dry, then go off-roading. Afterwards, the mud falls right off with a hose and pressure washer.

wonder if that works any better than fluid film? Certainly cheaper on a per application basis. Does it adhere well? Do you need to apply it to a clean surface or just spray it and forget it?

 

[Alabama Mud Machine]

wonder if that works any better than fluid film? Certainly cheaper on a per application basis. Does it adhere well? Do you need to apply it to a clean surface or just spray it and forget it?

Worked best for us on a clean surface, let it dry, then go off-roading. Reapply each time.

 

[49Gramps]

I use a sweep-type of lawn sprinkler, re-positioning it every 10 minutes or so till the whole underside's done well.

 

[PyrPatriot]

I use a sweep-type of lawn sprinkler, re-positioning it every 10 minutes or so till the whole underside's done well.

And if I live in a rental where I don't have access to a garden hose?

 

[Alabama Mud Machine]

And if I live in a rental where I don't have access to a garden hose?

Find a coin-operated car wash where you pay to use a pressure washer, would be the next best recommendation.

 

[12BNNT]

I recall that the reason you don't drive more than 5mph when fording 30" is to keep water from being forced into places.

going slow when water fording is so you don’t create a wave in the engine bay that gets sucked into the intake.

as far as cleaning the underside, last time I played in the mud, I laid down on the ground along side the truck and blasted the underside with an electric power washer. Another member (different thread) recommended the ryobi water broom for power washers as it can be turned over for undercarriage power washing. Picked up one last week at the orange box store.

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