Lisle 24680 Spill-Free Funnel, Works well – But adapters may not fit your vehicle

. I started ‘doing it myself’ and this came up as a great tool for a coolant drain & fill for my subaru impreza. For my car, i would say it took a good 30 minutes for all of the bubbles and air to leave the system and also kept my heater on full blast for the first 10 minutes, then turned the vents off but left the heater temperature knob at full. Whether that is the proper way to clean out the heater-core i’m not entirely sure, so any advice on that is great helpgoing on over a month now and no problems. Make sure you have something to collect your old coolant, make sure there are no more bubbles coming out from the funnel, and i would also recommend your car being level while you do this. Youtube has many videos on how to use this tool, too.

I’ve used the spill free funnel set a perhaps 5 or 6 times so far and not entirely satisfied with the results. . The connectors and attachments are supposed to allow you a water tight seal so that you can burp the coolant system of air especially after doing a coolant flush or head gasket job however half the time i’ve found that no matter which attachments i use coolant always seems to leak out and onto the engine. Maybe that’s acceptable by lisle’s standards, i don’t know. . I still like the set and it functions for helping to get air bubbles out of the system but there still may be some leakage depending on the fit of the pieces you are using and the make/model of car.

You can’t coolant flush without itthis thing is too cool. It fit and worked perfectly in my stock-radiator miata. Used the b fitting, as i recall. All the coolant went right into the radiatorclear so you can see the level before it overflows. :)comes all neatly packaged with a lid so you can clean everything and put it away neatly. T handle plug was leak free and a perfect way to stop the flow. Used the ‘squeeze the radiator hose’ trick and got away with no spillagethis product does exactly as advertised, even if i wouldn’t have believed it if i didn’t see it with my own eyes.

A must have for filling an automotive cooling system. To fill the cooling system i’ve always had luck with the following procedure for vehicles without a surge tank. After repair, fill cooling system using funnel and attachments, leave funnel filled 1/4 way with coolant. Massage air from upper radiator hose by hand. Start engine and maintain 1/4 coolant level in funnelafter vehicle warms to operating temperature make sure no large bubbles are purging from the coolant, massage upper radiator hose to verify no air is in the systemshut off engine and allow engine to cool to ambient temperature, be sure to keep coolant topped off as the coolant contracts back into the radiator. After the engine has cooled to ambient temperature remove funnel and install radiator cap. This will remove the most amount of air from the cooling system without the use of a pressure bleeder.

There are certain tools in your garage that are simply wonderful bargains for the money. A $30 leaf blower that lasts thirty years for example. The lisle 24680 spill free funnel is one of those tools. If you don’t have one of these. This makes changing coolant a breeze. The set comes with cap adapters for most cars. Simply install on the radiator and fill with coolant. When you get to the point of burping the system you fill it about half way and with the engine running turn on heater and you will see the air bubbles start to come out. Large funnel prevents much in the way of splash from the bubbles. As the coolant gets sucked back in simply add a little more to the funnel until the bubbles stop. I usually drive mine a little and after it cools off i repeat the process to make sure i got all of the air pockets which can cause you to loose heat during the winter. Great little tool for the home garage.

This really helped after dealing with a coolant leak. Bled all of the extra air out of the system to keep the car nice and warm. Did run into an issue with the radiator cap fittings. There was no rubber or foam insert, so they leaked. I adapted a piece of paper towel to fit inside which absorbed the extra moisture and maintained the pressure seal, so by the time i took off the cap to swap out the regular one, the paper towel had formed a perfect seal inside. I will be buying some high density foam to put inside the cap as a proper replacement.

Wow, i thought twice about buying this product because i thought it was a little crazy for a funnel system to be $20, but i was soooooo wrong. This product made it so much easier for my cooling system service. I used it as the directions told me to, and it was very easy and self-explanatory to use. It helped me to very easily bleed the cooling system after purging it of old coolant and putting in the new coolant. Overall, this product saved me a lot of hassle, spilled coolant, and time. Very awesome product and a must have for any cooling system service.

Key specs for Lisle 24680 Spill-Free Funnel:

  • Make sure this fits
    by entering your model number.
  • 45 degree elbow allows use on radiator caps that are placed at an angle
  • The E-adapter is used on the surge tanks on many Ford applications
  • The spill-free funnel eliminates trapped air pockets which usually cause erratic cooling system and heater performance
  • Extension allows access to caps located under shrouds or in fender wells

Comments from buyers

“My 350z has a closed coolant system not like my older GM vehicles where just leaving the radiator
, Makes Coolant changes a breeze!
, Not just for convenience!

Used this on a 2002 subaru outback. I believe the radiator was aftermarket. Because of this none of the adapters fit. I found one that the gasket would sit on top of the cap and seal it so long as the metal adapter would hold it firmly in place. It did not, so, i had to grind down the plug until the metal cap could be low enough to twist on. I’m lucky i was able to modify it, otherwise it would have been junk. I think the manufacture should include a universal adapter of some sort. So one star off for that, but 4 stars because it did work, no more overheating problems now that the air is out of the system, but this could have easily been a 1 star review had i not been able to jerry rig it.

This is a funnel with a set of adapters that create a water-tight fit to the radiator filler neck. During cooling system bleeding, the funnel serves as a reservoir for additional coolant that drains into the radiator as trapped air escapes. After bleeding, the neck of the funnel can be plugged using the supplied stopper. This allows unused coolant to be transferred back into its original container. All of the included accessories fit inside of the funnel and can be stored there when the funnel is not in use. A snap-on lid keeps everything in place. The product is very well thought out. I used this without problems on a 1993 acura integra. There are a number of 1-star reviews here by people who found that none of the included adapters worked with their car. Don’t let these deter you from purchasing the product.

I bought this to bleed the air from the coolant system on a 2000 subaru outback which has a notoriously hard system to bleed. So much so that the previous owner cut the guts out of the thermostat. Anyways, i put a new thermostat in after watching several youtube videos and decided to order this setup since it was a couple of bucks cheaper but looked identical to the kit recommended (except for the colors). Initially, i thought the ‘c’ adapter was the correct size (c cap = c adapter right?). This proved to leak, it was loose. On closer inspection i noticed that the ‘b’ adapter both fit the fluid hole of the radiator better, and, also has a taller boss for the adapter cap to press against keeping the seal tight against the fluid hole. My final setup for this vehicle ended up being: c adapter cap, b adapter, no extension – just the funnel. I’ve made up by own cobbled together funnels in the past but this one is the least trouble i’ve ever had.

7 blew coolant out overflow tank lid when hot, then collapsed both rad hoses after cooldown – probably close to warping head & blowing head gaskethadn’t bled all air after changing timing belt & water pump. Nearly impossible without 24680 due to rad cap below top of thermostat housing, and no more housing-top bleeder screw on this 7th gen civic. This big funnel holds fluid far above radiator, yet with zero mess. Fill it above its taper to assure it can’t empty & siphon more air back into system. Set to high heat, turn fan on to at least low, rev 2-3000 rpm every few min to push bubbles out, while idling for 30-40 min (or longer if bubbles continue). May want to park w radiator uphill, or raise front end slightly on jackstands, ramps or drive-on wood blocks for tough no-bleeder cars like most newer hondas. Also check that rad fan is cycling on, while burping. (my rad fan had recently fried – which made overheat & overflow worse when parked with zero (driven) wind speed in texas summer. Amazon has rad fans too – great honda / denso for $55; or $65 in parts store for also trustworthy dorman, minus a web coupon i used.

I purchased this funnel to do a complete air bleed from my cooling system (’04 pontiac grand prix gtp). I had a bit of an issue with the ‘threaded adapter’ (the black one in the product photo) – the threads didn’t quite match the threads on my radiator neck, so it didn’t want to thread on straight. Fix:since i couldn’t get it threaded enough to make contact with the top of the yellow radiator plug adapter, i had to slide on an additional rubber o-ring (from one of the other adapters) so it would sit a little higher out of the radiator neck, and allow the threaded adapter to make contact with it and keep it snug (and not leak). Other that that, this product worked great. One word of caution – after your engine has been running for a while at operating temperature, some of the bubbles may not actually be trapped air – it’s your coolant boiling a bit. I made the mistake of having a little too much fluid in my funnel when i decided to shut off my engine – because a few seconds later, the fluid started expanding and it overflowed out of the funnel, making quite a mess. Next time, i think i’ll keep the engine running, plug the funnel, remove it and the adapters, then cap the radiator (using gloves of course) – that way any expansion will redirect to the expansion tank, and not out of the top of the funnel.

The funnel works and i did manage to successfully bleed the air from the coolant lines in my car, after about 3 tries. First, getting a secure connection to the radiator took a little work to figure out, but i got there. I do not recommend using the long extension, as the weight of the funnel when full is too much for the plastic extension, especially when coolant is hot. Not gonna lie, i dumped a funnel full of coolant into my engine bay the first time. I recommend starting with the funnel almost empty and only adding coolant when the level goes down. On mine the coolant level rose significantly before the thermostat opened, almost to the top of the funnel. Also, if possible, place some objects under the funnel in case it starts to tip. And always wear safety glasses. Having learned some things along the way, i will use this again.

I drained and flushed my cooling system this saturday and after i was done i noticed my engine was running a tad bit warmer than it was prior to the coolant flush and refill. After diagnosing the issue i was sure i had a large air bubble some where in the system. This funnel is exactly what i needed. Today i got home and waited for the car to cool back down. Took the radiator cap of and put on the appropriate adapter (each cap adapter has a corresponding plastic insert that goes into the radiator opening, look for the matching letter on both the adapter and insert. Put the adapter over the insert and lock it on. Now put the funnel into the adapter and now it’s ready to use. I put the plastic plug rod i to the funnel to stop the flow and filled it half way with coolant. I started the car and put the heat up tot he highest temp and turn the blowers to the lowest setting. I took out the plug rod and some of the coolant got sucked into the radiator.

This fit my ’03 wrangler tj with no leakage and was incredibly helpful in burping the system of air (which the 4. 0l engine is notoriously bad about). Plenty of videos online showed just pulling the cap and letting the coolant burp all over the engine bay, but that wastes glycol and makes a mess. With this i topped off the radiator plus about 1/3 of the funnel (see photo), fired up the jeep and let it idle with the heater on max while squeezing hoses. Once i could squeeze every hose without seeing bubbles i revved it up to ~2000 rpm in neutral, let it idle for another 20 minutes, then shut the engine off and let it cool overnight. I came back the next morning and plugged the funnel with the included t-handle ‘wand’, then transferred the coolant left in the funnel into the overflow bottle and capped the radiator. Definitely makes the job easier and cleaner, but the reason i give it 5 stars is because after using it i am sure there are zero air bubbles lingering in my cooling system.

Spill-free is a bit of an exaggeration, less spill prone would be more accurate. It was more useful than a bucket and funnel. . But none of the caps/adapters fit my radiator fill neck very tightly, and during the ‘burping’ process, where the engine is run to remove any air bubbles i had to hold the fill bucket and adapters firmly in place, and it still leaked some. I think larger rubber gaskets for better sealing may help?i wasn’t overly impressed, but it got the job done.

All accessories are self-contained inside the funnel for easy storage. The instructions and illustrations could be better, but it’s enough to figure out how to use. Lucky i stumbled across this product. I’ll never do another fluid change without one. I got a little concerned once the engine started warming up completely and the coolant was really hot. But the thick plastic funnel didn’t give and worked like a champ. Still recommend burping on an incline, if possible to help get the air out of the system.

I work on subarus which are common to have head gasket issues. These work perfect for filling the system after engine installation. They also work perfect for testing for head gaskets when they fail and allow exhaust gasses into the coolant system. Bubbles will continue to show in the funnel while engine is running and when they surface, the exhaust smell will be unmistakable.

My 350z has a closed coolant system not like my older gm vehicles where just leaving the radiator cap open would burp the air outof the cooling system. My car would overheat and i didn’t know why until someone told me that i needed to buy this to completelyremove the air out of the coolant system. How to do it:from all my reading the best way to tackle this issue is to attach the funnel to your radiator cap opening while cold and fill the funnel about 1/4 up so when system burps fluid falls into they system rather than more air. Let the car idle until normal operating temperature also have your heater set to full hot to allow the fluid in the heater core to flow through also. Mainly look at your needle on the gauge and once its about 1/4 of the way up orif you have a gauge with numbers and it reaches 160 to 180 you should be good. At this point the vehicles thermostat will open and startallowing the hotter coolant to start flowing into the radiator and the cooler fluid should start running into the engine block. Bubbles should startcoming out of the funnel this is the air that was trapped in the system coming out. Add coolant to the funnel to keep it at the 1/4 mark so air can’t getback into the system. Also if you have an rpm gauge you can step on the gas pedal and hold the rpm’s at 3000 for 10 seconds and then releasefor 10 seconds, do this 3 times. Then let the car idle until you don’t see to many bubbles coming out and shut down the car.

Review Date
Reviewed Item
Lisle 24680 Spill-Free Funnel
4 of 5 stars, based on 1,377 reviews