Here is a tip for pouring liquids without the use of a funnel. Instead of using a lengthy object to help the liquid slide down into the awaiting container or reservoir, we’re simply going to be a good shot and keep the container from “gulping” for air while we pour. Here is an example of pouring anti-freeze into a coolant reservoir, but first, we need to recognize eight things:
- The width of the container dictates the width of the stream you’re going to pour. This needs to match up with the target you’re pouring into.
- How fast you pour and the viscosity of the liquid affects the “reach” of the stream – the distance away from the spout that the liquid arc travels.
- Container design and how you hold it will either allow air in to promote a smooth pour, or inhibit incoming air and cause “gulping.” Gulping will cause the container to flex and liquid to surge as you pour it. Surges will cause the “reach” of the stream to vary erratically and make a controlled pour very unlikely.
- If you pour too fast the liquid will “gulp,” no matter how well the container is designed.
- Debris from a foil seal left in the spout opening can alter the reach, width and direction of the stream.
- The lower you can hold the bottom of the container, the closer you can get the pouring spout to where you want to pour and thus improve accuracy.
- “Reach” will vary a bit from when you start to pour, to when you are fully pouring, to when you end your pour. The reason being that you won’t instantly be fully pouring the liquid nor instantly stopping it. You have to aim the stream during its variations of “reach” in order to make a clean pour from start to finish.
- Liquid sloshing around in the container will alter the characteristics of the pour.
The best designed gallon jugs have the pouring spout off to one side. This allows you to pour with the spout side held up so air enters while you pour (to replace the liquid as it leaves), thus reducing the tendency of the liquid to gulp. It’s not intuitive, but the spout should be on the high side of the jug when you pour (even though that places it farthest from the target of your stream). If you have the spout on the low side of the bottle, the liquid will pour very soon after you tip it, and the outgoing contents will stop the air from flowing back into the bottle and cause it to gulp.
Keeping the foregoing in mind, you can make a pour of anti-freeze with little or no spilling. Expect a reach of about two inches with the container held about 12 inches above your target. It will pour much like what you’d expect from water.
The challenge with a gallon jug is to find a spot in the engine compartment that will allow you to get the bottom of the jug low so you can get the spout closer to the opening of the reservoir. For some vehicles, the reservoir is near the wheel well, so holding the jug outside the engine compartment may allow you to hold it lower and thus get the spout closer to the reservoir opening.
It’s best to hold the handle of the jug with your fingers and allow the heel or back of your hand to rest on something stable. This helps with a good and steady aim. Also, allow the jug to remain motionless for a while just before the pour so you don’t have the liquid sloshing back and forth in the container and varying the reach and direction of the stream.
Tilt the bottom of the jug upwards to pour deliberately but in a smooth and limited manner until you’re certain that your aim is good and you have calculated the reach of the stream properly. Make minor adjustments to your aim and tilt throughout the pour. Stop the pour if you’re terribly wrong about either.
If you’re uncertain about using this technique, simply use an empty jug of the same design filled with water and practice under conditions that replicate what you’ll find in your engine compartment. You could even practice by pouring water on the closed cap of the reservoir as an excellent mock-up before you try it with an open cap and a gallon jug of anti-freeze solution.