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Motor Medic by Gunk M4011/12 DOT 5 Brake Fluid - 11 oz.

4.9 out of 5 stars 27 customer reviews
| 3 answered questions

Price: $10.12 & FREE Shipping on orders over $49. Details
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One Each, 11 oz.
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  • Meets or exceeds federal motor vehicle safety standard 116
  • Tamper proof inner seal
  • Long lasting, high quality construction
  • Does not absorb moisture and it will not harm painted surfaces
  • DOT 5 does not promote brake system corrosion
  • Insures long term braking performance under extremely high and low operating temperatures
  • Meets or exceeds Federal Motor Vehicle Safety Standard no.116

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Frequently Bought Together

  • Motor Medic by Gunk M4011/12 DOT 5 Brake Fluid - 11 oz.
  • +
  • Red Line 42804 V-Twin Transmission Oil with ShockProof Fluid - 1 Quart
Total price: $28.05
Buy the selected items together


Product Information

Size:One Each, 11 oz.

Technical Details

Brand Gunk
Model M4011/12
Item Weight 9.6 ounces
Product Dimensions 6 x 3 x 4 inches
Item model number M4011/12
Manufacturer Part Number M4011/12

Additional Information

ASIN B000CPIMTO
Customer Reviews
4.9 out of 5 stars 27 customer reviews

4.9 out of 5 stars
Best Sellers Rank #90,836 in Automotive (See top 100)
#45 in Automotive > Oils & Fluids > Brake Fluids
#101 in Automotive > Oils & Fluids > Oils > Hydraulic Oils
Shipping Weight 9.6 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available November 23, 2005

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Product Description

Size: One Each, 11 oz.

RADIATOR SPECIALTY CO M4011/12 11OZ Sili Brake Fluid Meets Or Exceeds Federal Motor Vehicle Safety Standard No. 116 Of 356 Degrees Fahrenheit Minimum Wet Boiling Point, Tamper Proof Inner Seal.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Jimmy Z on November 11, 2014
Size: One Each, 32 oz. Verified Purchase
Nice stuff. All silicone brake fluid is all the same, and is made by the same company. If it is DOT 5 and purple, it all came from DOW. So I just get the most for the best price. This time, this was the best buy. I like to use it because it does not mix with water, and if you spill some, it doesn't eat everything it touches.
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Size: One Each, 32 oz. Verified Purchase
I hesitated buying a silicone based brake fluid till I found a honest in depth review and evaluation written by a experienced mechanic. Having done many brake repairs he took some older seals removed from jobs and put them in a jar for 6 months completely covered with the silicone brake fluid. When he removed them there was no sign of damage. He went further to say "if anything they were better then when I put them in". Myth 1 - Silicone fluid ruins our seals Debunked. So He replaced his own fluid with the silicone "I was not to careful about getting all the original fluid out so it had to mix some" After 6 more months, no issues. Myth 2 - You can't let them even touch each other (silicone and normal brake fluid) Debunked. You should pour this fluid smoothly to not add a lot of bubbles as it does not release air bubbles as easy as the old fluid. Hotroders all use this cause if it gets on your paint.. nothing happens, no peeling your paint. Also silicone does not attract water. So it doesn't let your brake lines rust from the inside out. Standard fluid in all Harley Davidson motorcycles. Been in my 79; Super Beetle for 2 months, Great no issues at all.
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Size: One Each, 32 oz.
Silicone Brake Fluid is the only brake fluid to use in any application. Silicone fluid does not attract moisture like DOT 3 fluids and will not damage paint. Humidity and moisture in any brake system is what causes the most damage. I know the label has a warning "Do not use in ABS braking systems" The reason for this is because the Silicone fluid has slightly less lubricating qualities than DOT 3 so after 20 years your ABS unit pistons can fail. ABS systems are not safe on icy roads, so I remove them from my vehicles. If ABS braking was offered as an Option I would not purchase it. DOT requires it, too much Government in the wrong place. I recommend bleeding a brake system slightly every year to remove contamination from the system. You will be amazed at how long your brake system will last with this simple maintenance procedure.
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Size: One Each, 32 oz. Verified Purchase
After doing quite a bit of research, I figured out which brake fluid to use in my 1987 Harley Davidson Heritage Softail (FLST), and this happened to be the best choice for my money. It's probably more than I'll end up using in a decade, but some of the other choices were for less fluid for similar pricing, so this was the wisest choice. You do have to be careful which fluid you use, since the wrong choice can really mess up your brake system (Seems rather obvious, but I've known riders who don't pay much attention to what they're using in their bikes).

I'll re-evaluate this product after I've been using it in my brake system for a few months, to let everyone know how it's performing.

Shipping was faster than expected (Next day, w/ Prime 2-Day), and it was packed in a leak-proof bag, inside the shipping box.
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Size: One Each, 32 oz. Verified Purchase
I used this in my 1986 K30 CUCV m1008 when I replaced my left front caliper. The truck doesn't see much use but seems like the product is working well. Just remember DON'T MIX THIS WITH REGULAR BRAKE FLUID!
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Size: One Each, 32 oz. Verified Purchase
I am done with DOT 3-4. making a mess of my vintage cars. Have used DOT 5 for 20 years with no problems. Note, I always start with new master and slave cylinders and hoses, plus flush steel lines with alcohol prior to using. Fill very slowly to avoid aeration.
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Size: Case of 6, 32 oz. Verified Purchase
Price is unbelievably low and delivery was in good time. Have used this type of fluid before and works well after complete flushing of old fluid. Currently using in winch control that call for brake fluid- should work better than conventional dot-3 as moisture is a problem with old crawlers. Appreciate the great deal.
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Size: One Each, 32 oz. Verified Purchase
Switched to silicone brake fluid because a small leak in a brake line allowed DOT 3 fluid to leak out resulting in the damage of the paint on the fender well - something silicone fluid would not do.
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