|Item Weight||0.3 ounces|
|Product Dimensions||5.7 x 3 x 1.2 inches|
|Item model number||375CS|
|Manufacturer Part Number||375CS|
|Vehicle Service Type||all-terrain-vehicles;utility-vehicles;street-sport-motorcycles;off-road-motorcycles;street-cruiser-motorcycles;street-touring-motorcycles;street-motor-scooters;snowmobiles;marine-personal-craft|
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Interdynamics 375CS Radiator/Coolant Dye - 1 oz. Bottle
|Price:||$7.99 & FREE Shipping on orders over $49. Details|
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- Contains one application of radiator/engine cooling system UV leak detection dye
- Safe for use in all vehicle makes and models except 1996 and newer GM models that use DEX-COOL coolant
- Compatible with all types of antifreeze except GM dex-cool coolant
- Helps locate leaks
- Professional grade
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Top Customer Reviews
Just to be on the safe side, I used 2 doses of the dye in the fieros cooling system since it holds about twice as much coolant as a regular car. I waited until dusk and examined the engine with the uv light. The dye showed up bright and clear and I was able to quickly rule out hoses and water pump as the source of the leak. The leak is in a very difficult to view area of the block and behind a heat shield, so I can't get a direct view of the precise place it is leaking, but the drips of dye leave marks even after the fluid dries out so by process of elimination it appears that I have a leak from the head gasket. If I had better access I have no doubt I could see exactly where the leak is, but that would require some disassembly and possibly putting the car on a rack which I haven't done yet.
All in all, this stuff worked great for finding a difficult leak. The leak seems to only happen during actual driving. When I stopped and let the car idle while looking for the leak I could smell but not see any evidence of the leak. (possibly drips drying on the hot block and exhaust). With the dye I could clearly see where the fluid leak had been and places where it pooled (around the oil pan lip, etc) where I never would have noticed it without the dye.
I also showed the car to a mechanic during the day. The dye was visible under uv light during the day as well. I think I'd still prefer to do real troubleshooting in a light-limited environment, daylight visibility was certainly good enough to confirm findings or get a better look at the problem overall.
I topped the radiator off and put the contents in , closed the cap and ran the engine for about twenty minutes. I really didnt see anything. So I had to go on some errands and drove around for a few hours and went home and had dinner. The engine had cooled down and i shined the light all around the engine compartment and sure enough, there was this little spot of bright yellow. It was a loose hose clamp that had the smallest leak. I tightened up the clamp and looked around to make sure there was nothing else to see. I had some engine degreaser and sprayed down the area that had shown a leak and took a drive. when i came back i checked every thing and no yellow dye!! I had gotten very lucky it wasnt something else. I drove it another couple of days just to make sure everything was all right. Then I fluhsed the system and reinstalled fresh coolant
Updated: It turned out I had a blown head gasket in my SUV. The leakage was small and internal so this dye did not help. However, once I removed the coolant hoses and the head, the effective of this dye is quite evident. It turns the blue Honda coolant into neon-green solution which is easy to spot even in daylight. Bumping it to 5 stars.
Most Recent Customer Reviews
Says to pour all into radiator, I used half and that was too much. It works too well.Published 18 days ago by Stewart
Worked even without UV light and glasses. Bright, easily seen dye trace.Published 1 month ago by Bill Cody
Had a slow leak found it right away lower radiator hose repair shop told me I needed new radiator for $400 used with phileex black light also sold on Amazon for $12 another good... Read morePublished 1 month ago by Et
Used half a bottle and it worked great, found the leak. Now to figure how to clean up this dye, if you have a small or large leak this is the stuff for you.Published 2 months ago by Marc
Seems to glow just fine, after adding it to my coolant I could see there was a couple leaks from the water pump. Thank God there was nothing in the exhaust. Read morePublished 3 months ago by MastaBlasta
Worked as intended. At first could not find leak. But then looked at exhaust pipe and saw green dye which was not what I wanted to find but proved to me that leak was inside... Read morePublished 4 months ago by Amazon Customer
Worked great, helped me track down a coolant leak to the timing cover of my dodge truck with the 5.9L motor. Read morePublished 4 months ago by JR