Jon E
Can i pressure wash the underside of my BMW 328i? At one point in time it had an oil leak and now its fixed but it left all kinds of oil residue on the bottom of my ride. Can i jack it up and use a pressure washer on it or would it be bad to do? if not then what can i do?
Answer
Yes, you can pressure wash the bottom of your car, but you have to be careful with a few things. Watch out for any electrical connections like the oxygen sensor in the exhaust for example. Also avoid spraying at any bushings, bearings, or hinges since you could force water inside which could cause corrosion.
I greatly prefer using a degreaser like Simple Green and a brush with stiff plastic brittles. That's only a few dollars from a hardware store, safer for your car, just as quick as a pressure washing. After scrubbing, the residue just washes away with a light spray from a garden hose.
Good luck!
Yes, you can pressure wash the bottom of your car, but you have to be careful with a few things. Watch out for any electrical connections like the oxygen sensor in the exhaust for example. Also avoid spraying at any bushings, bearings, or hinges since you could force water inside which could cause corrosion.
I greatly prefer using a degreaser like Simple Green and a brush with stiff plastic brittles. That's only a few dollars from a hardware store, safer for your car, just as quick as a pressure washing. After scrubbing, the residue just washes away with a light spray from a garden hose.
Good luck!
What's the best process for pressure washing a dirty driveway?
Me as Myse
half of it is on a steep hill. the other portion is flat.
Answer
If it's the kind of pressure washer that uses detergent (has a detergent reservoir), go to a home improvement store and get a driveway washing concentrate in the cleaning products section. This contains degreasers that will help take off any soaked in oil.
Also, if you have pooled oil (even old hard oil that's been sitting there for a while) and it's a smooth concrete surface, get a bag of Oil Dri at any auto parts store. It's like kitty litter, but it contains chemicals that absorb oil. You sprinkle it on the oil and work it in with your foot (with shoes on, of course). You then sweep it up and throw it away to remove oil stains. It even works on brake fluid.
As far as how to proceed on the driveway, start at the highest point and work your way toward the lowest point. If you use a detergent, be careful about the concrete becoming slippery. Also, use a hose to rinse it off with fresh water after you're done pressure washing it. And, while it shouldn't damage the concrete to use the pinpoint spray setting, use a couple inches wide spray. The pinpoint setting may cause deep cleaning in the points it hits, resulting in light lines all across the concrete. The wider setting will avoid that.
If it's the kind of pressure washer that uses detergent (has a detergent reservoir), go to a home improvement store and get a driveway washing concentrate in the cleaning products section. This contains degreasers that will help take off any soaked in oil.
Also, if you have pooled oil (even old hard oil that's been sitting there for a while) and it's a smooth concrete surface, get a bag of Oil Dri at any auto parts store. It's like kitty litter, but it contains chemicals that absorb oil. You sprinkle it on the oil and work it in with your foot (with shoes on, of course). You then sweep it up and throw it away to remove oil stains. It even works on brake fluid.
As far as how to proceed on the driveway, start at the highest point and work your way toward the lowest point. If you use a detergent, be careful about the concrete becoming slippery. Also, use a hose to rinse it off with fresh water after you're done pressure washing it. And, while it shouldn't damage the concrete to use the pinpoint spray setting, use a couple inches wide spray. The pinpoint setting may cause deep cleaning in the points it hits, resulting in light lines all across the concrete. The wider setting will avoid that.
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