Amazon has Lumax LX-1603 Plastic Transmission Funnel for $1.77 with free Prime shipping. No minimum.
https://www.amazon.com/dp/B00GD2HYQW
Select no-rush shipping at checkout to receive a no-rush shipping credit.
- Durable, oil resistant plastic
- Safe for petroleum products
- Flexible design to fit into tight places
- Complete with handy storage hanging tabs
- 18 inch long spout with tapered 3/8 inch spout opening