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Old 01-20-2010, 06:23 PM   #1
XanRules
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Default Easiest way to clean UNDER the car..?

and I don't mean the street, you jerks.
I'm talking about the nasty, slimy, dirty, filthy undercarriage that turns my skin black every time I change my oil or an exhaust gasket.

I've been trying to drive onto ramps and just blast it with engine brite and/or extreme simple green and then do another blast of water. But there's still parts I can't reach.

Help plz?
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Old 01-20-2010, 06:41 PM   #2
cardude007617
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dont drive your car when its wet?
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Old 01-20-2010, 06:43 PM   #3
nairbmik
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Well there are always the gas station car washes...
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Old 01-20-2010, 06:53 PM   #4
NA impreza~J
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get a hose nozzle for cleaning gutters. The long extension wands with a flex tip.
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Old 01-20-2010, 07:24 PM   #5
REVNU
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Get access to a lift. I used to do mine at my friends car dealership he worked at. It made it soooo much easier. I would spray it down with some degreaser, let it sit for about 10 minutes, then go to town with the pressure washer. Of course I would also regrease my bushings while I was under there.

If you can't get access to a lift, maybe try 4 jacks (borrow some) and jack it up as high as it will go. That should be high enough to get under there (don't go all the way under, I'd hate to have the jacks fail on you and crush you.

Good Luck!
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Old 01-20-2010, 07:25 PM   #6
Unrealgtx
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easiest way would be , in my opinion, get a nice pressure washer some degreaser and get to work , just make sure to cover all electrical parts with some foil or something incase u spray upward to reach the battery and what not

edit: didint see the post above mine but +1 to that!
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Old 01-21-2010, 02:05 AM   #7
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....if the undercarriage is really dirty, I will use a pressure washer to start (to know the loose/big stuff off) and then go over it by hand. However, I usually just go over sections individually. For example, during one of my tire rotations, I will use degreaser, brushes, etc. to clean the wells, calipers (where I can't normally reach through the wheels), axles, strut, springs, etc. During one of my routine oil changes I might go over the bottom of the engine, front suspension, etc. I rarely set out to only do the undercarriage of my cars. It's usually individual sections I will clean periodically that are related to some other task I'm performing at the time. However, digging in and using towels, brushes, etc. to clean the various components is the only way I can get things really clean.
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Old 01-23-2010, 12:57 PM   #8
darren94
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^+1 !
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Old 01-23-2010, 01:14 PM   #9
573
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Well, after I do a rally-x, I start by putting a garden sprinkler under the car. It spins around and throws water everywhere so it does a nice job of softening everything up and getting a good bit of the **** off. I just throw it under there and slowly pull it from back to front while I get the **** off the rest of the car. If it's still messy after that, I'll jack it up one side at a time and blast it off with a power wash. The most important thing is to never let it get really bad. I do this kind of frequently so water alone does a pretty good job of cleaning it up.
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Old 01-23-2010, 07:31 PM   #10
AllWires
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I never realized you actually have to clean the bottom How often are you supposed to do this?
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Old 01-23-2010, 07:52 PM   #11
573
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Quote:
Originally Posted by AllWires View Post
I never realized you actually have to clean the bottom How often are you supposed to do this?
It depends on where you're driving and the weather conditions. Salt is another thing you should take into consideration. There really isn't a specific time interval--just clean it when it's dirty. It doesn't need to shine. Just get the bulk of the filth off so water/salt/grime doesn't get trapped under and rust things out.
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Old 01-23-2010, 09:07 PM   #12
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....and in my case, I also like to keep the under carriage, engine bay, etc. clean because I find it makes leaks, problems, etc. easier to spot. ....and since I do all of my own maintenance, I hate working on a dirty car.
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Old 01-23-2010, 10:28 PM   #13
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befriend a hot midget.she can get all dirty cleaning your underside then you can return the favor and clean her dirty side
dont forget to video it
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Old 01-24-2010, 12:45 AM   #14
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Quote:
Originally Posted by AllWires View Post
I never realized you actually have to clean the bottom How often are you supposed to do this?
rofl....
hahaha
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Old 01-24-2010, 12:55 AM   #15
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We have an auto car wash at the dealer I work for that has a bar of several high press nozzles that spray under the car. I normally put it on the lift and spray everything (minus heat wrapped headers, electrical sensors, etc) with simple green (with the car cold of course) and brush. After this I try to get the car off the lift and down to the auto wash (about 100yds away) quickly to spray the bottom off. A few passes over the sprayer gets it pretty clean. I normally only do this after the roads have been salted, which isn't often where I live.
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Old 01-25-2010, 02:07 AM   #16
XanRules
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Quote:
Originally Posted by AllWires View Post
I never realized you actually have to clean the bottom How often are you supposed to do this?
I don't think you do, it just bugs me
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Old 02-06-2010, 09:44 PM   #17
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Yupp after i go in the dirt i jack each side up and pressure wash. It does a great job if you take your time with it.
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Old 02-10-2010, 09:24 AM   #18
Ty55
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Quote:
Originally Posted by AllWires View Post
I never realized you actually have to clean the bottom How often are you supposed to do this?
Its not a super neccessity because of the coating that Subaru applies to the undercarriage of their newer vehicles. But as a good preventative maintenance practice it should be done periodically. Especially if you get your car dirty a lot.
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Old 02-10-2010, 09:48 AM   #19
bobanoid
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its a good idea to wash the undercarriage if you tend to drive in places with alot of salt, up here (upstate new york) my car always has a layer of salt over it no matter what i do, so i try to go to the cheap 5 dollar car wash once a week, its one of those no touch ones and it has undercarriage jets, just roll over them slow and itl do a decently good job.
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Old 02-10-2010, 10:11 AM   #20
dustinhyle
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Most of the automatic car washes that have people running them the ones with the longer lanes and people to dry the car at the end have under body wash. That being said not all are created equally but I have found a few that do a really good job of knocking all of the junk off of the bottom and it keeps you from having to wash the stuff off of your driveway when done.
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Old 02-10-2010, 10:47 AM   #21
Kean
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Quote:
Originally Posted by Ty55 View Post
Its not a super neccessity because of the coating that Subaru applies to the undercarriage of their newer vehicles. But as a good preventative maintenance practice it should be done periodically. Especially if you get your car dirty a lot.
....there are a few examples floating around here that show just how ineffective that factory coating can be in certain areas/circumstances. I wouldn't put too much faith in it.
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Old 02-10-2010, 12:35 PM   #22
kakarotoni
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drive your car in a large puddle of water
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Old 02-10-2010, 05:22 PM   #23
cprincipe
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Do the Travis Pastrana jump, just hit the brakes halfway.
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Old 02-12-2010, 01:47 AM   #24
rstinut
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http://www.rs25.com/forums/f138/t859...eeeeetail.html

good ideas he seemed to use meguires degreaser and some hand action lol
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Old 02-13-2010, 03:10 PM   #25
Boostinbildo
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I go to the do it yourself car wash bay, back up onto my ramps, then spray the whole thing with degreaser. Let it sit for a few minutes, than blast the crap off with the pressure washer.
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