SKU: 27064694905

RISLONE Radiator Stop Leak Concentrate 41196

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Description

RISLONE Radiator Stop Leak Concentrate 41196Rislone Radiator Stop Leak Concentrate is specially designed to stop minor cooling system leaks and drips caused by normal cooling system wear and age. Works with ALL Types and Colours of Antifreeze Coolant and or Water. Stops & Seals Coolant Leaks Seals Leaks in Radiators, Gaskets, Heater Cores & Freeze Plugs Works with ALL Types and Colours of Antifreeze Coolant and or Water Dosage & Directions Dosage Passenger cars and light trucksUse one bottle


Rislone Radiator Stop Leak Concentrate is specially designed to stop minor cooling system leaks and drips caused by normal cooling system wear and age. Works with ALL Types and Colours of Antifreeze Coolant and/or Water.

  • Stops & Seals Coolant Leaks
  • Seals Leaks in Radiators, Gaskets, Heater Cores & Freeze Plugs
  • Works with ALL Types and Colours of Antifreeze Coolant and/or Water

Dosage & Directions

Dosage
Passenger cars and light trucks—Use one bottle for 6 & 8 cylinders and half bottle for 4 cylinder engines. Small engines or other small systems use approximately 20 mL per liter of fluid capacity. Over the road and heavy-duty equipment—Install one bottle for every 15 liters of coolant capacity.

Directions

  1. Shake well and pour into radiator after engine cools
  2. Fill radiator and overflow tank to proper level and reinstall cap
  3. Drive or idle engine for 15 to 30 minutes
  4. Leave in cooling system for continued protection
  5. For preventative maintenance, use once a year to help guard against future leaks

Opening cooling system while engine is hot or running may cause severe burns.

Disposal 
Observe local laws and regulations. Where permitted, dispose of in sanitary sewer systems. Never pour onto the ground or storm sewer system.

Compatibility

Do not mix or install with any other product. If another product has been installed,  flush the system thoroughly.

Frequently Asked Questions

Can Rislone Radiator Stop Leak be installed in existing antifreeze coolant?
Yes, it works with all types and colours of antifreeze coolant and/or water.

Will Rislone Radiator Stop Leak work in the new extended life antifreeze?
Yes, Rislone Radiator Stop Leak works with all types and colours of antifreeze coolant and/or water.

Do I need to drain my cooling system after using Rislone Radiator Stop Leak?
No, this product is designed to be left in the cooling system to protect from future leaks and overheating.

How long does it take to see results?
We recommend you drive/idle the vehicle for 15 to 30 minutes. In most cases the leak will be sealed instantly, but others will require up to 30 minutes. If the leak is not sealed in 30 minutes, a second application may be required, or mechanical repair may be needed.

Will Rislone Radiator Stop Leak plug my heater core?
No, Rislone® Radiator Stop Leak will not clog a clean heater core. If using it 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 and is only opened in the HOT position.

What are the dosage recommendations?
Passenger cars and light trucks—Use one bottle for 6 & 8 cylinders and half bottle for 4 cylinder engines. Small engines or other small systems use approximately 20 mL per liter of fluid capacity. Over the road and heavy-duty equipment—Install one bottle for every 15 liters of coolant capacity.

Can I install Rislone in my overflow reservoir?
Yes, if direct access to the radiator cap is not available, install in overflow tank.

I accidently added the Rislone Radiator Stop Leak into my engine oil, what should I do?
It 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: 41196
SIZE: 325ML 
Shipping Notes
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Exchange/Return Notes
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SKU: 27064694905

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4.9 ★★★★★
Based on 17 reviews
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Product Reviews
A
Verified Purchase
Alexciz
Bozeman, US
★★★★★ 4
I finally took the plunge. A satisfying star read
Format: Kindle
What a chicken I was to leave off reading this book for YEARS because I couldn’t cope with Logan’s “situation” (no spoilers!) & how it could possibly be sorted in his own book. Oh ye of little faith! Elle Kennedy isn’t a #1 author by CHANCE! Oh no, that is TALENT baby! She took the end of book one, ran with it, then flipped that mother sucker on its head to dig deeper into Logan and learn about Grace. These two were definitely made for each other. The story spans from one school year to the next and we get lots of context too. There are some side characters that I’m not sure o know why they were added as they didn’t add to the story and a particular side character that really needed an ending as she just disappeared. Why was she so unhappy? What was she getting into off page? Was she ever forgiven? The s story seemed to end abruptly, and that threw me off a bit. I kept going like I was gonna flip another page, and that was the end! Besides the fact of feeling like there are so many things left unsaid this was a good book. Definitely liked book one more but that could also be because the show just came out on prime but nahh, I loved to book one even a decade ago, and it’s still amazing to this day! The hard part of this was the female narrator on the portions when I listened…Lorelei Avalon, she was NOT CAST properly in my opinion at all. She’s not a bad narrator, she’s just not suited, even remotely, for a late teens early 20-year-old college student. Her voice is more for characters late 40s early 50s in my opinion. I’m glad on book 3. It looks like we changed the narrator so I hope to mostly listen to that one. As always, Lee Samuels did a phenomenal job. He’s been in the game for a while, so maybe that’s what helps make it right for him. But he definitely knew how to change the nuances of his voice to suit whatever character he was reading at that time. All in all, this was a really good book that I’m sad. I waited so long to read. Thanks to campus diaries coming out on TV? I’m ready to finally finish up this series! Book 3 here I come!!
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Reviewed in the United States on May 28, 2026
B
Verified Purchase
Britt
Bozeman, US
★★★★★ 5
🎧
Format: Paperback
The start of this book had me nervous but I ended up really loving this book! I loved how aware Logan was to what he was doing to Grace and stopped it even though it hurt to read. I loved that Grace made him WORK for her forgiveness and some parts were even SO funny. I loved all four of the guys and their great banter. My sweet baby Logan really was going through it in his personal life and his story resonated so much with me. I cried multiple times while reading and cried happy tears at the ending. It was perfect and exactly how I hoped it would end. 🎧 The narrators did a fantastic job with the dual narration.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
K
Verified Purchase
Kindle Customer
Louisville, US
★★★★★ 4
*MILD SPOILERS*
Format: Kindle
this was amazing!!! i loved the characters and the writing is a lot better than most of its sport-romance-book counterparts. the worst part of it for me was the climax, i felt as though the FMC’s actions did not match her personality type. he is unsure about their relationship and is worried that she will leave him due to the seemingly bleak and boring future ahead of him. he voices this to her and she gets mad. mind you, this man had to grovel and beg and complete tasks for a single DATE. like girl, if we had been dating for 2 months and i had to do all that to get a date, i would be insecure too. it was quick so easily ignorable, but still bumped it down a star.
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Reviewed in the United States on May 20, 2026
J
Verified Purchase
Jennie_reader
Chelsea, US
★★★★★ 5
The 1st one is better than this one but I still love it
Format: Kindle
The Mistake is the second book in Elle Kennedy’s Off-Campus series, following a new couple while maintaining the humor, steamy romance, and emotional depth that made The Deal so popular. This installment focuses on Logan, Garrett’s best friend and fellow hockey player, and Grace, a quiet but strong-willed freshman, as they navigate second chances and personal growth. John Logan – Logan is charming, funny, and a ladies' man, but beneath his confident exterior, he struggles with deep-seated family issues and a sense of being trapped by his circumstances. His development throughout the book makes him more than just the stereotypical player. Grace Ivers – A freshman who starts off shy but proves to be independent and assertive. She isn’t easily won over, and her ability to stand her ground makes her a refreshing and likable heroine. Familiar faces from The Deal, including Garrett and Hannah, return, while new side characters add to the college setting’s energy and humor. Kennedy’s writing is engaging, with a mix of humor, emotional moments, and steamy romance. The alternating perspectives between Logan and Grace allow for a well-rounded view of their relationship and personal struggles. The book delivers plenty of humor and flirty banter while also tackling deeper themes of family responsibility, self-worth, and making tough life choices. The chemistry between Logan and Grace is strong, and their romance is a blend of fun, tension, and genuine emotional connection. Strengths ✔ Strong Character Growth – Both Logan and Grace undergo realistic, satisfying development. ✔ Second-Chance Romance Done Right – Logan’s journey to making up for his mistake feels earned, and Grace doesn’t immediately forgive him, which adds authenticity. ✔ Engaging Writing & Humor – The witty dialogue and college setting keep the story entertaining. ✔ Balanced Romance & Personal Struggles – The love story is front and center, but each character also has their own challenges to overcome. The Mistake is a fun, emotional, and steamy addition to the Off-Campus series. While it follows a familiar formula, the engaging characters and well-paced romance make it a standout. Fans of The Deal and other college sports romances like The Chase by Elle Kennedy or The Score (book 3 in the series) will love this one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2025
R
Verified Purchase
Rafael Morales
New York, US
★★★★★ 5
better than the series
Format: Kindle
The chemistry the characters the banter the amazing direction of the story all builds up to a crescendo that simple didn’t let go! This is the first of an epic series that simply let love in its many different ways and journey transformed lives in ways that one couldn’t imagine! Beautifully worded and crafted with a creative nack to entertain and really dig this universe! Well done Miss Kennedy, well done!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026

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