Questions tagged [corrosion]

Slow deterioration of metal parts where the metal is worn away by an electro-chemical reaction called oxidation that is formed when combining exposed metal, oxygen, and electrolyte (eg acids, salts, moisture).

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Prevent inline "waterproof" fuses from corroding

I recently bought a used aluminum boat that has 12v wiring for lights. The wiring has inline "waterproof" fuses similar to this: https://www.princessauto.com/en/in-line-fuse-holder-with-led-...
User1974's user avatar
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VW Eos - Is this normal kind of rust on the underside (control arm) of a 14 year old car?

My first post here. I'm looking to get a 14 year old VW Eos, but I noticed some rust going on in this underside bar shown in the picture. Everywhere else is fine. There are some circular holes in the ...
Sav_d's user avatar
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What could be the cause of rust only on the inner side of the brake disc?

As you can see in the picture below, the disc is rusted only on the inside part and the outer edges dont have rust. I heard discs rust but after braking the rust surface goes away from friction and ...
Timothy Scherer's user avatar
2 votes
1 answer
134 views

Changing a modern maintenance-free AGM battery - chemical burn/irritation risks

I just replaced a 5-year-old maintenance-free AGM battery (Varta silver dynamic 95Ah 850CCA), and the only precaution I took was to wear latex examination gloves. (The car is also only 5 years old). ...
Andrew Parks's user avatar
3 votes
1 answer
1k views

Rusted spark plug well/mating surface - is this a concern?

While changing the spark plugs on a new to me 2014 Yamaha outboard I noticed that 3 of the 4 wells have a fair bit of corrosion in them, this corrosion isn't just in the 'outer' surface of the well ...
wild.coast's user avatar
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304 views

Used Ford Fiesta Rusty Sills

looking for some advice as to whether the picture shown is something serious to worry about when buying a used Ford Fiesta. It’s 11 years old and doesn’t have any corrosion advisories on MOT history ...
Chris's user avatar
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4 votes
2 answers
669 views

Inner sill corrosion implications in Rover 45 2003

At my last MOT I had advisories that the Nearside inner sill had slight corrosion and the Offside front inner sill slight corrosion. Is it safe to drive and if not is it worth getting it repaired. The ...
susan remon's user avatar
1 vote
2 answers
127 views

When to use threadlocker?

Despite the use of threadlocker being somewhat widespread (e.g. repair videos), I have yet to see a single recommendation to use it in any service manual. Perhaps this is my relative inexperience, but ...
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3 answers
676 views

Can an insulated copper wire oxidize down its ENTIRE length?

I was doing some electrical wiring on a snowmobile trailer today and was surprised to see black instead of shiny copper when I cut and stripped a section from the middle of a long section of ...
wild.coast's user avatar
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1 answer
394 views

Is it worth undercoating an already rusted frame?

I live in a place where the roads are salted and it leads to a lot of undercarriage corrosion. I typically get my vehicle undercoated every year (which costs about $150 where I am). Even though I have ...
hurlbz's user avatar
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Can spraying the car with a light layer of diesel help against corrosion?

I received an advice from a friend: put diesel in a bottle with a spray nozzle and spray the car with it. He said that this should form a layer on the car that helps against corrosion. When I asked ...
Rauni's user avatar
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Is blue corrosion on components other than the battery ever normal?

I've been troubleshooting a problem with my truck for a few days now and just noticed this on a component behind the throttle body. Someone told me this is the accelerator pump. I haven't noticed blue ...
Johnathan H.'s user avatar
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370 views

Can I apply dielectric grease to a blower motor resistor body?

I have a 2001 Camry (North America model) which (in)famously puts the open-body blower resistor in the ducting to cool it, which leads to enormous corrosion and burnout problems in humid/salty ...
tealsuki's user avatar
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1 answer
115 views

Advantages of clear (vs. black) rust prevention

If I am going to put Waxoyl or equivalent onto areas that don't need to have a pretty black sheen, does it make sense to use the "clear" version so that any new build up of rust can be seen ...
andy29's user avatar
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3 answers
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Car has failed MOT, is it worth it? [closed]

I have a Lexus RX 400h year 2005 which has just failed its MOT on the following: rear subframe is corroded and seriously weakened. rear wheel bearing is rough and has excessive play It also has a ...
caarlaa123's user avatar
1 vote
1 answer
215 views

Rotor replacement/machining necessary after car has been sitting for a couple of months!

My 2013 Mazda CX-5 has been sitting out for a couple of months and we had a pretty wet spring here. When I took it in for service, the dealership told me that they want to replace the rear rotors and ...
Patrick's user avatar
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1 answer
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How can I prevent, slow or reduce white corrosion build-up on my battery?

I have an 02 Civic SiR (Canadian model) with a maintainable battery. I check and refill the electrolytes every few months with distilled water. The battery is about 4 years old. I use a Battery ...
autobottodoggo's user avatar
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1 answer
219 views

Can low battery cause car to cut out?

Honda Civic vti 1999. Car starts and cuts out immediately. On a few occadions it has started on stayed on for longer e.g 30 seconds to 1 minute but it still cuts out again. The battery is showing 12....
James Wilson's user avatar
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2 answers
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Can finger prints on disc brake rotor cause problems

I was swapping my brakes today, and did not wear gloves. My fingers were blackened and probably had some grease/oil mixed in on them. At one point, I grabbed my disc brake's rotor accidentally. I ...
Intrastellar Explorer's user avatar
1 vote
2 answers
263 views

Anti-static drag strips benefits of earthing?

I know this sounds like a stupid question but could an anti-static dragging strip have any benefits to a car attached to certain parts of a car in terms of galvanic corrosion or any other form of ...
Gerard Henry's user avatar
1 vote
0 answers
1k views

Battery Corrosion Buildup on Positive Terminal

Earlier today when I went to move my car, as I attempted to crank it over all the dash lights went out and didnt return. This has happened 3 times - this being the 3rd - since I've owned the car - I'...
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Battery terminal corrosion?

I was preparing my motorbike for storage. When I was pulling the battery I noticed the terminal covered with what looks like corrosion or grease. Can anyone chime in? This is brand new battery with ...
Wild Star's user avatar
4 votes
1 answer
32k views

Can corrosion on the subframe be addressed by cleaning and repainting or waxoyling?

My old but reliable 2003 Ford Focus has just passed its MOT with no work needing doing, but the chap who did the MOT said the sub-frame is showing signs of corrosion. This is currently just cosmetic. ...
John Rennie's user avatar
1 vote
1 answer
195 views

Weird Corrosion on Subaru intake manifold bolt

So I pulled the intake manifold off my 04 Forester xt and one of the bolts on the driver side had this whitish battery acid looking color. Does anybody know if this should tell me anything?
volare's user avatar
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5 answers
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Should I really keep my gas tank at least half full?

I've seen a number of sources that state you should keep your car's gas tank at least half full, some of which saying it's only important in winter. Some examples: http://www.osceolagarage.com/why-...
Daniel Griscom's user avatar
1 vote
1 answer
477 views

Battery Corrosion

I just got my car serviced 2 1/2 months ago. Today my car wouldn't start and found out i have massive corrosion around the connectors and it looks like the connectors have been eaten thru so it doesn'...
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1 vote
3 answers
3k views

Corrosion risk? Steel head bolts and aluminum block

Looking for some chemistry expertise/experience here. I bought some ARP head studs, which didn't quite fit. I don't have a thread micrometer, so I can't say exactly how oversized they were, but I wasn'...
user2864293's user avatar
3 votes
2 answers
197 views

Why do we continue to paint cars with plastics?

Why do we continue to paint cars with oil based compounds; plastics, solvents, resins, etc? It's surely the least (or at least, not the most) efficient method for preserving ferrous metals. Just +10....
voices's user avatar
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1 vote
1 answer
113 views

Aluminum parts on motorcycle oxidized after washing

I washed my used motorcycle the first time since I've bought it this summer, and soon after noticed that oxidation appeared on some aluminum parts. It's definitely wasn't there before and surely this ...
qwaz's user avatar
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1 answer
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Battery corrosion cleaned off with baking soda but car won't start now. Does the terminal need replacing?

I've got a 2014 Honda Accord V6. The positive batter terminal has been corroded for several months now. I first noticed it in January but never got around to removing the corrosion until today. I ...
Davy Li's user avatar
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4 answers
2k views

Does Electrical Corrosion Increase During Seasonal Change?

There seems to be an excessive number of Questions being posted where the issue seems to point to electrical issues due to corrosion. I am wondering if this is perhaps seasonally related? The influx ...
NitrusInc's user avatar
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2 votes
2 answers
217 views

Car inconsistently won't start

My 2013 Honda CR-V will occasionally not start. It cranks fine but will not actually start. If I turn the car on but don't try to start it, electronics and everything else seem to be fine. I noticed ...
Phillip Byram's user avatar
2 votes
1 answer
1k views

How to remove negative battery terminal

Just had the displeasure of figuring out the positive battery terminal has completely corroded away from the battery. When I opened the cover for the positive terminal, the entire piece fell off of ...
Kris's user avatar
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1 vote
2 answers
320 views

MOT advisories: slight brake bind and surface corrosion outer sills?

I'm looking into buying a 2004 Daihatsu Sirion. It has low mileage (50,000) and from all accounts has been well looked after. On its most recent MOT it had two advisories: "Slight brake bind osf" and ...
MaryJane's user avatar
3 votes
3 answers
24k views

How serious if corrosion on the inner sill of a Ford Focus?

I realise that can't be answered without me saying how serious the corrosion is. The context is that I'm looking at a 2004 Ford Focus on eBay and the MOT history on the DVLA web site reports an ...
John Rennie's user avatar
3 votes
0 answers
707 views

protect gas lines from corrosion?

'07 Cobalt, electric power steering, 50K miles Snow/slush/salt area. The car (new to us) hasn't had a lot of winter miles, so it's in not-too-bad condition. However, underneath today, I saw that ...
George's user avatar
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3 votes
3 answers
90 views

2007 Mustang, Bad battery?

Does the appearance of corrosion point to a larger problem with the battery? There's neverbeen a corrosion issue before this and now, it's ridiculous. Could this point to the necessity to replace the ...
user24119's user avatar
7 votes
1 answer
5k views

Modern cars do not rust faster in coastal locations - Myth or truth?

Someone warned me to never buy a second hand car from the coast because cars rust faster and you cannot always see which hidden parts are rusted. The expectation is that cars from the coast has a ...
Jasper Citi's user avatar
3 votes
3 answers
1k views

Corrosion on battery post

Would corrosion on battery post cause my car not to start? I can charge the car and it still will not start but if i clean the post it will start every time.
Julie's user avatar
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4 votes
1 answer
26k views

Corrosion on positive terminal and cable

Can a cracked cable connector cause corrosion? or is all corrosion a result of battery leakage?
philip's user avatar
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8 votes
1 answer
2k views

Rust From Repaired Chip in Paint Didn't Go Away

Last year, I had a big stone chip with growing rust. I thoroughly sanded it, applied primer, and painted it. It wasn't meant to look good as I just wanted to prevent the rust expansion. However, ...
Allan Xu's user avatar
  • 950
7 votes
2 answers
5k views

Is there something that can be applied to electrical connections to prevent rust and corrosion?

Another recent question got me thinking about this. Will a ground to the frame work properly if the bolt is powder-coated? Since I don't have any skill, tools, or ability to powder coat, whats the ...
cdunn's user avatar
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9 votes
2 answers
53k views

Is white powder on the battery terminals harmful?

I have a four and half year old car. I have recently noticed that there is white powder forming to the battery terminals. The car still has the original battery and probably should be replaced ...
juhist's user avatar
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3 votes
1 answer
183 views

Undercarriage corrosion when move away from states with snow

We bought a car in a state that has a lot of snow. We then moved to a state where it never snows. A letter from my car manufacturer says that we can get a free anti-corrosion material applied since ...
Jake Blake's user avatar
9 votes
1 answer
4k views

Why the different the colors of terminal corrosion on the battery?

I have a 2001 Ford Windstar. When I went to clean the battery terminals: the one with the RED cover over it was a bright blue color; the other had normal white corrosion. I do not know why the this ...
Sharon Maxon's user avatar
1 vote
1 answer
737 views

Repair broken light connector on Volvo 240

So I tried to replace the broken corner light assembly on my '92 Volvo 240 last night. On the old unit, the gray connector (pictured in link) was stuck, and eventually pulled free with part of the ...
anon01's user avatar
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2 votes
1 answer
7k views

How to find and access the actual terminals of car battery

2013 Honda Civic here. I need to disconnect my car battery so that I can clean off some corrosion. Here are the pics: And: Obviously the positive terminal is under the big red cap with the plus sign ...
smeeb's user avatar
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4 votes
2 answers
17k views

How to remove rust from chromed parts?

My motorcycle (Suzuki GN250) has many chromed parts, some of which are spotted with rust. I've seen several videos on youtube about ways of removing rust (e.g. https://www.youtube.com/watchv=...
ponadto's user avatar
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4 votes
4 answers
193k views

Cola vs Baking soda vs Water to clean battery, and what should be used afterwards?

This questions is to extent the following question Should I use coca cola or baking soda + water to clean my battery clamps?. I have heard of using both Coke and baking soda to clean battery clamps ...
Vladimir Oselsky's user avatar
4 votes
1 answer
593 views

Dealing with deposits on salt flats/mines

I am planning to visit Bonneville Salt Flats in a few weeks, and wanted to take my bike out for a spin there. Not breaking any speed records, you see, just for fun, and the sense of history, so to ...
theUg's user avatar
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