Question about 2007 Ducati Sport 1000 Monoposto

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Brake fluid info

What are the brake dot types?

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DOT3 DOT3 brake fluid is the "conventional" brake fluid used in most vehicles. One of the most familiar brands is "Prestone." Advantages: * DOT3 fluid is inexpensive, and available at most gas stations, department stores, and any auto parts store. Disadvantages: * DOT3 will damage natural rubber brake seals and should not be used in any vehicle suspected of having natural rubber seals * DOT3 fluid eats paint! * DOT3 fluid absorbs water very readily. (This is often referred to as being hydroscopic.) As such, once a container of DOT3 has been opened, it should not be stored for periods much longer than a week before use. Since DOT3 fluid absorbs water, any moisture absorbed by the fluid can encourage corrosion in the brake lines and cylinders. DOT4 DOT4 brake fluid is the brake fluid suggested for use in late model vehicles. Advantages: * DOT4 fluid is available at most auto parts stores, and at some (but not all) gas stations or department stores. * DOT4 fluid does not absorb water as readily as DOT3 fluid. * DOT4 fluid has a higher boiling point than DOT3 fluid, making it more suitable for high performance applications where the brake systems are expected to get hot. Disadvantages: * DOT4 fluid eats paint! Small leaks around the master cylinder will eventually dissolve away the paint on your bodywork in the general vicinity of the leak. * DOT4 fluid is generally about 50% more expensive than DOT3 fluid. * Since DOT4 fluid still absorbs some water, any moisture absorbed by the fluid can encourage corrosion in the brake lines and cylinders. DOT5 DOT5 brake fluid is also known as "silicone" brake fluid. Advantages: * DOT5 doesn't eat paint. * DOT5 does not absorb water and may be useful where water absorption is a problem. * DOT5 is compatible with all rubber formulations. (See more on this under disadvantages, below.) Disadvantages: * DOT5 does NOT mix with DOT3 or DOT4. Most reported problems with DOT5 are probably due to some degree of mixing with other fluid types. The best way to convert to DOT5 is to totally rebuild the hydraulic system. * Reports of DOT5 causing premature failure of rubber brake parts were more common with early DOT5 formulations. This is thought to be due to improper addition of swelling agents and has been fixed in recent formulations. * Since DOT5 does not absorb water, any moisture in the hydraulic system will "puddle" in one place. This can cause localized corrosion in the hydraulics. Careful bleeding is required to get all of the air out of the system. Small bubbles can form in the fluid that will form large bubbles over time. It may be necessary to do a series of bleeds. * DOT5 is slightly compressible (giving a very slightly soft pedal), and has a lower boiling point than DOT4. * DOT5 is about twice as expensive as DOT4 fluid. It is also difficult to find, generally only available at selected auto parts stores. DOT5.1 DOT5.1 is a relatively new brake fluid that is causing no end of confusion amongst mechanics. The DOT could avoid a lot of confusion by giving this new fluid a different designation. The 5.1 designation could lead one to believe that it's a modification of silicone-based DOT 5 brake fluid. Calling it 4.1 or 6 might have been more appropriate since it's a glycol-based fluid like the DOT 3 and 4 types, not silicone-based like DOT 5 fluid. As far as the basic behavior of 5.1 fluids, they are much like "high performance" DOT4 fluids, rather than traditional DOT5 brake fluids. Advantages: * DOT5.1 provides superior performance over the other brake fluids discussed here. It has a higher boiling point, either dry or wet, than DOT 3 or 4. In fact, its dry boiling point (about 275 degrees C) is almost as high as racing fluid (about 300 degrees C) and 5.1's wet boiling point (about 175 to 200 degrees C) is naturally much higher than racing's (about 145 C). * DOT5.1 is said to be compatible with all rubber formulations. Disadvantages: * DOT5.1 fluids are non-silicone fluids and will absorb water. * DOT5.1 fluids, like DOT3 & DOT4 will eat paint. * DOT 5.1 fluids are difficult to find for sale, typically at very few auto parts stores, mostly limited to "speed shops." * DOT 5.1 will be more expensive than DOT3 or DOT4, and more difficult to find.

Posted on Nov 20, 2008

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SOURCE: 2008 FLHX Street Glide: no problem, just asking what DOT # of brake fluid ...

DOT 4 brake fluid

Posted on Aug 10, 2010

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What type of clutch oil do I use for my 2006 ktm 250sxf

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There is no specified amount to put in the front brake master cylinder. I usually put the bike on the side stand and turn the front wheel all the way to the left. This brings the top of the master cylinder to as close to being parallel to the ground as possible. Remove the top and fill the the master cylinder as full as you can get it without it running over when you put the top back on. Be very careful of the brake fluid. DOT 5 is not to damaging to painted surfaces but DOT 4 is. Read the top of the master cylinder to make certain you are putting the right type of brake fluid in the brake system. DO NOT MIX THE DIFFERENT TYPES OF FLUIDS, THEY ARE NOT COMPATIBLE. I wouldn't fill the master cylinder any closer than about a 1/8 inch or so of the top.

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Check the brake fluid level in the master cylinder. It makes no difference what brand the brake fluid is as long as it is DOT 5. DO NOT MIX DOT 4 OR DOT 3 FLUID WITH DOT 5. They are incompatible and will ruin your brake system. If your master cylinder is not empty and your brake pedal is low, you need to bleed the brake. This is not a difficult procedure but it MUST be done in an EXACT manner. To bleed the brake, DEPRESS AND HOLD the brake pedal down. Loosen the brake bleeder in the rear brake caliper and allow brake fluid and air to come out of the caliper. If you can put a small piece of clear tubing on the bleeder valve it reduces the mess. Once the flow stops, close the bleeder valve. Then release the brake pedal and check the brake fluid level in the master cylinder. Do not release the brake pedal with the bleeder valve open or allow the reservoir to run dry. Repeat the proceedure until the pedal is at full height and firm. If this does not solve the problem, there is an adjustment on the master cylinder pushrod. Do not adjust the push rod out too far as doing so will not allow your brakes to release once applied. They'll get tighter and tighter until the bike will no longer move.

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1 Answer

My foot brake pedal will not come back up. I add fluid but did not work . I also need to change the back brakes. Thanks

If you added dot 3 fluid yu have a problem ..only use dot 5 fluid.. if you use dot 3 you will have to clean the whole system with mineral spirts then replace with dot 5 fluid .. may even have to replace line and caliper change the brake pads undo the 2 tork screw in the caliper then remove the caliper from the brake disk change the pad and reinstall the caliper .. good luck

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How do i check brake fluid on a 2006 flstc

You check the brake fluid for the front brakes by turning the handle bars so that the top of the brake fluid reservior is nearly level, usually all the way to the left. Remove the two screws and take the top off the reservior. If you add any fluid, make sure you put the correct fluid in the reservior, the proper type should be written on the top of the reservior cover. I'm pretty sure it's DOT 4. Do not mix DOT 4 and DOT 5.

To check the rear, find the reservior. On the older models it used to be on downtubes on the front of the frame, right in front of the engine. Same here, make sure you add the correct type of fluid.

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