Don't use any type of oil in place of brake fluid. Oil gets too thick at colder temps. It won't effect the rubber cups,so should work ok..
Similarly one may ask, can you use motor oil for brake fluid?
Tom: Motor oils, including synthetic ones, are based on mineral oils. The problem is that mineral oils and rubber don't mix well. The oils can cause rubber to swell or deform, and because there are lots of rubber seals in your brake system, that eventually can make your brakes stick, leak or even fail.
One may also ask, will brake fluid damage an engine? Damage to Engine Seals Mixing brake fluid with oil causes the rubber seals inside an engine to swell, tear and leak, requiring an expensive reseal job to correct.
Similarly, what can be used for brake fluid?
Most brake fluids used today are glycol-ether based, but mineral oil (Citroën/Rolls-Royce liquide hydraulique minéral (LHM)) and silicone-based (DOT 5) fluids are also available.
Is it bad to put power steering fluid in brake fluid?
The most common mistake is adding power steering fluid to the brakes. Power steering fluid contamination will cause seals to immediately begin swelling. As the seals swell, they move forward and block the passages that allow the brake system to function. One example is the return ports in the brake master-cylinder.
Related Question Answers
Can you drive without brake fluid?
Not having brake fluid in your car won't destroy the brakes, but whatever you hit when the brakes don't work will likely be destroyed. The fluid operates under high temperatures and high pressure and, without it, your car would not be able to stop when you push the brake pedal inside your vehicle.How do you tell if your brake fluid is contaminated?
Place the suspect fluid in a clear container filled partially with water. If there is petroleum based fluid in the brake fluid it will separate and float to the top. If two layers form as shown in Figure 69.2 then you have a contaminated system.Is automatic transmission fluid the same as brake fluid?
most ATF has things in it like friction modifiers and other mixtures. Brake fluid is designed to remain stable under very high heat applications and is why so much of it anymore includes silicone because it helps to keep it from boiling or burning up as it asorbs the heat from the brake system.How does old brake fluid affect braking?
Over time, brake fluid absorbs moisture through the caliper pistons, hoses, and connections. Too much moisture contamination causes the fluid to become vapor during hot braking cycles that negatively affects your braking ability. Signs that your brake fluid is contaminated include: Your brake pedal responds more slowly.What happens if brake fluid is contaminated?
Brake fluid contaminated by moisture lowers the boiling point of the fluid to the point that, even under ordinary conditions, your brakes could get hot enough to cause the brake fluid to boil causing vapor to form in the brake system. The vapor is compressible, causing a low or no brake pedal.Is power steering fluid heavier than brake fluid?
Power steering fluid is much more dense than brake fluid, so it should sink to the bottom, but if you didn't run the car and have that fluid cycle through the system, you can just take your turkey baster and suck it out. To be safe, you should just suck out what you can and flush the system.Can you substitute power steering fluid for brake fluid?
Brake fluids today are mostly glycol-ether based, but there are also mineral oil and silicone-based fluids available. The most commonly used power steering fluid substitute is automatic transmission fluid (ATF). Actually, a lot of manufacturers use ATF instead of power steering fluid.Can you mix old and new brake fluid?
Yes you are mixing the new fluid oil with the old oil. But do this often enough you'll gradually renew the fluid to new. Way better than doing nothing. Brake fluid is a type of hydraulic fluid used in hydraulic brake and hydraulic clutch applications in automobiles, motorcycles, light trucks, and some bicycles.What is the difference between dot3 and dot4 brake fluid?
The basic difference between DOT3 and DOT4 is the boiling point. This is the temperature under which the fluid evaporates and also how prone to absorbing water it is. Both DOT3 and DOT4 are hygroscopic, meaning they absorb water. The dried boiling point is determined by using the fluid from a brand new container.Can I use water as brake fluid?
Water in presence of oxygen can corrode the braking lines, it can tamper the brake seals. Most importantly, water starts evaporating 4 degree C onwards. You certainly don't want a fluid in your braking system which evaporates as you drive. So these are the reasons we do not use water as brake fluid.Can you mix dot3 and dot4 brake fluid?
DOT3 and DOT4 are not equivalent (as explained above), but they are compatible to mix. So, if DOT3 was introduced into a system containing DOT4, no need for concern about gelling or chemical reactions etc. but the overall boiling point of the system will be reduced by the DOT3 accordingly.]What happens if u dont change brake fluid?
Moisture-laden brake fluid can also cause metal components to rust and corrode, resulting in rust particles finding themselves in your brake fluid. Improperly closing your brake fluid reservoir cap can also allow dirt, grime and other debris to make its way through the brake system.What happens if you put oil in a gas tank?
If a little oil is poured into the gas tank of a car, it burns up in the engine cylinders, causing the car to produce blue smoke and run roughly until the oil is gone. If oil has accidentally been added to the gas tank of a vehicle, it can be diluted with gasoline to mitigate the effects of the oil on the engine.What happens if you put cooking oil in a gas tank?
Can I drive my car even if I suspect someone has put cooking oil in the gas tank? Biggest issue is that in the winter cooking oil solidifies and might clog the fuel system. It's better to dilute it with real diesel fuel. Furthermore the lubrication properties of cooking oil are not as good as that of diesel.Can I put brake fluid in my gas tank?
Brake fluid in fuel is a absolute NO NO. It will swell many types of rubber.Can you mix brake fluid with motor oil?
DOT 3 brake fluid and engine oil doesn't mix, but DOT 4 does since you didn't include it. It'll sink to the bottom of the oil pan.Can you add brake fluid to engine oil?
Brake fluid is hydraulic fluid, which has a different composition than oil. Just as pouring oil into brake lines would cause brake failure, adding brake fluid to the oil tank would cause the engine's seals to break down.What happens if you put salt in a gas tank?
Salt will not dissolve in gasoline but it will in any water in the tank. Then it will slowly corrode the bottom of the tank. Its unlikely to make it into the engine but you never know. The salt crystals may be sucked into the fuel pump and clog its filter so then the engine might not run. 
