SKU: 83642912652

RISLONE Block Seal Permanent Head Gasket Fix 41111

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Description

RISLONE Block Seal Permanent Head Gasket Fix 41111Rislone Block Seal Head Gasket Fix is the easiest solution to stop head gasket coolant leaks. No draining of the cooling system is required. One step formulation contains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps and cracks then harden to permanently stop leaks. This works because of the extreme heat inside the combustion chamber (2750C) that acts as a catalyst

Rislone Block Seal Head Gasket Fix is the easiest solution to stop head gasket coolant leaks. No draining of the cooling system is required. One step formulation contains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps and cracks then harden to permanently stop leaks. This works because of the extreme heat inside the combustion chamber (2750°C) that acts as a catalyst to permanently harden the material to make it stronger than the actual head gasket itself. Your vehicle is a good candidate for this product if it can idle for 20 minutes without overheating or having to add coolant. 

  • Safely Seals Gasket And Other Severe Leaks
  • Quickly and Permanently Stops Coolant Leaks
  • One Step—No Draining Required—Easy To Use
  • Use with ALL types of traditional or extended life coolant

Dosage & Directions

Dosage
One bottle treats cooling systems from 7.6 liters to 15 liters. Use ½ bottle for cooling systems from 3.75 liters to 7.5 liters. For larger systems use one bottle for every 15 liters of cooling system capacity. Most 6 and 8 cylinder engines will use one bottle, and most 3 and 4 cylinder engines will use ½ bottle.

Tip: If direct access to radiator is not available and if overflow tank is pressurized, you can install in tank.

Directions

  1. Allow engine to cool. Make sure engine is cool enough so radiator cap can be safely removed.
  2. Fill radiator and overflow tank to proper level and reinstall radiator cap.
  3. Start engine.
  4. Turn heater on hot and fan on high.
  5. Idle engine for 15 minutes.
  6. Allow engine to cool so cap can be safely removed.
  7. Top off radiator and leave Rislone Block Seal Head Gasket Fix in cooling system for continued protection. Drive vehicle as normal.

Cooling systems that are dirty or partially clogged should be flushed before usage. Protect from freezing. Protect bottle from freezing.

Compatibility

Use with ALL types of 50-50 mix antifreeze including conventional green or blue (Silicate-Based) and extended life red/orange or yellow (OAT/HOAT) coolant, and/or water.

Suitable for use in petrol, diesel, turbo, LPG and racing engines.

Frequently Asked Questions

Can Rislone Head Gasket Fix be installed in existing antifreeze?
Yes, it is compatible with ALL types and brands of traditional or extended life coolant including yellow, orange, pink, red, blue, purple and green silicate based & non-silicate based (OAT/HOAT) 50-50 mix antifreeze, and/or water. Systems that are dirty or partially clogged, a flush is recommended before use.

Can it be installed in a diesel engine?
Yes, it works with ALL gasoline and diesel engines.

How does this type of product work?
Rislone Head Gasket Fix formulation contains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps & cracks and harden to permanently stop leaks.

What if I don’t have direct access to the radiator?
If direct access to radiator is unavailable and if reservoir / overflow tank is pressurized, you can install in tank. Otherwise remove top hose where it connects to the top of the radiator and install product in hose. Reattach hose and tighten clamp.

Does Rislone Head Gasket Fix permanently repair leaks?
Yes, it is a permanent solution for your cooling system leaks. What do we mean by permanent? It is not designed to be temporary, or a quick fix like other brands. Just like replacing a head gasket will not last forever, neither will Head Gasket Fix. Millions of bottles have been sold since the product was developed in 2004 successfully sealing leaks for many years and tens of thousands of kilometres.

Do I need to drain my radiator after the leak has been repaired?
No, top off radiator and leave Rislone Bock Seal Head Gasket Fix in cooling system for continued protection and drive vehicle as normal.

What are the dosage recommendations?
One bottle treats cooling systems from 7.6 liters to 15 liters. Use ½ bottle for cooling systems from 3.75 liters to 7.5 liters. For larger systems use one bottle for every 15 liters of cooling system capacity. Most 6 and 8 cylinder engines will use one bottle, and most 3 and 4 cylinder engines will use ½ bottle.

Will Rislone Block Seal Head Gasket Fix plug my heater core?
No, Rislone Head Gasket Fix will not clog your clean heater core, it is safe and effective. If using Rislone Head Gasket Fix to stop heater core leaks, make sure you turn your heater control to HOT. Some vehicles have a valve that controls coolant flow through the core.

I accidently added the Rislone Block Seal Head Gasket Fix into my engine oil, what should I do?
Rislone Head Gasket Fix is only designed to be added to the cooling system. If the product is installed in the engine oil and the engine has not been started, in many cases you can remove the valve cover and drain the oil leaving the drain plug off. Then use an engine flush washing out the head keeping special attention to the oil return holes that run down to the oil pan. Clean these out and pour the engine flush down these holes flushing everything into the oil pan and out the drain hole. If the engine has been run, you need to take the vehicle to have a professional mechanic evaluate what can be done to clean the inside of the engine. This might include taking the engine apart to clean all of the parts.

Technical Information

SAFETY DATA SHEET
CODE: 41111
SIZE: 680G

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 83642912652

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    4.3 ★★★★★
    Based on 29 reviews
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    Product Reviews
    M
    Verified Purchase
    Mavis Adam
    Dallas, US
    ★★★★★ 4
    Great ball, bad rope
    Size: Medium, Number of Items: 1, Size: Medium, Number of Items: 1
    My dog and I love the starmark ball on a rope tug toys. While this is one of the best tug toys we have found, I am continually disappointed with the quality of the rope. The plastic sleeve comes off the first day, and after that the stitching begins to weaken until the rope ends come apart and the rope slides out of the ball. Is there a way to improve this design so that this toy lasts longer? My dog is not left alone with the toy, it is only used as an interactive tug toy as a training reward. I am updating my review now several months later. I reinforced the rope with a paracord braid and the toy now lasts a very long time. My dog and I play with this toy everyday on our morning hike. He is a large German Shepherd with high ball drive. He carries this ball in his mouth several miles on our morning hike. We play fetch in the fields near our home and in the lake beyond the fields with this toy every day. This toy is his reward in obedience training and we play a lot of tug with it every day. Reinforcing the handle has made a huge difference as the toy lasts and lasts now with the improved rope. Great ball, we will always have a collection of them at our house!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on September 19, 2020
    A
    Verified Purchase
    AGJ
    Phoenix, US
    ★★★★★ 5
    Great for training and play!
    Size: Medium, Number of Items: 1
    My German shepherd love this toy! Great to take on walks with you as light weight and can fit in your pocket. Stands up to the toughest of play. Great as reward toy for training in place of treats! We always have one on hand at home or out and about!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 18, 2026
    R
    Verified Purchase
    Room112
    Birmingham, US
    ★★★★★ 5
    Great for big dogs
    Size: Medium, Number of Items: 1
    Our pup is now 15 months old (nearly 110 lb and still growing). We got this ball when he was 3 or 4 months old. GOODS - - Our pup fetches with extreme drive, and the rope helps him quickly snatch the ball off the ground (versus a tennis ball, in which we are worried he will go head over heels at times) - Our pup also loves to play fetch in the water, and this ball floats great and again, the rope gives another point to bite onto - The yellow color is easy to see, even in grass - Our pup typically fetches the ball, and leaves the rope mostly out of his mouth. So, throwing the ball doesn't result in saliva-covered hands - It's pretty easy to throw the ball 50', and possible to throw it 100' - It doesn't roll/bounce, so if you are for example playing fetch on your front lawn and are concerned with a tennis ball rolling into the street, this one alleviates that issue - Our pup is spoiled and has several balls. This is absolutely his go to ball. We have woken up in the morning before to see him standing next to the bed with the ball in his mouth, asking us to get up and play. BADS - - Occasionally when he goes to fetch it, he will step on the rope as he tries to pull up on the ball. - We have gotten this ball stuck in trees multiple times. In fact, there is one stuck on the roof of our church from playing fetch on the lawn there. :-/ Not a fault of the ball, but if you start whipping it around like nunchucks, it might not go where you want. - The near max you can through this ball is 100'. And since it doesn't roll/bounce, throw distance is throttled. We often play fetch in a local baseball field, and have no issue wearing him out with this ball. However, if you are planning on throwing a ball the distance of half a football field, you might want to consider something else. SIZE - - We purchased both the medium and the large. Even though our pup is huge and can fit a soccer ball in his mouth, he still prefers the medium. It's easier for him to get in his mouth and breath while running back. The medium is the size of an orange, whereas the large is the size of a grapefruit. DURABILITY - - We have gone through about 4 of these balls, BUT this is because we lost 3 of them. We believe he dropped one out of the car window while we were driving, one is on the roof of our church, and I forget about the other one. On the first one we had, the stitching behind the black tape was down to a few threads after about 5 months. Given duration we use these balls (every day) and the joy he gets from them, I feel the durability is good for the price. - We do play tug with the ball at times, and no issues there Enjoy!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on December 17, 2013
    G
    Verified Purchase
    Greg
    New York, US
    ★★★★★ 3
    Good but better options out there.
    Good ball, but is a cheaper version of the Foamster sold online. The rope is cheap and comes apart, and can be abrasive to a dogs mouth. The Foamster uses a higher quality ball and are more durable and use grippy biothane straps rather than cheap rope. They are also made to order in the USA with lots of fun colors. Worth the extra money if your dog likes these balls.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 10, 2025
    K
    Verified Purchase
    Kristen
    Lake Worth, US
    ★★★★★ 5
    Fun toy for fetch
    Size: Medium, Number of Items: 1
    Daisy loves this toy. I found it from her dog trainer, and it makes rewarding her with a quick tug of war and fetch really easy. Also it’s shockingly durable. It looks like foam, but she has not destroyed this one.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on November 11, 2025

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