These are Great!

[kshaw]

I have used these for about 25 years but surprised that so many car owners and shops are not familiar with them. These work on most car fluids including washer fluid, anti-freeze, and oil. With these, you do not need funnels and the shut-off valve on the end give you total control over the liquid flow. You can find them on Amazon.

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[SeaJay]

https://www.oreillyauto.com/detail/c/flotool/hopkins-flotool-yellow-plastic-antifreeze-washer-spout/hop5/10101wb

Sounds great!