There shouldn't be large, collectable, quantities of water ejected from the filter. Think splattering misty spray. If the tube stays attached, any water is going to get shot upwards by the sides of the tin. A rag is probably all you will need.
Probably not exploded. But it'll pop off for sure. I tried a bit of clear tubing on the drain of the gold oil/water separator on my Yong Heng. Obtained a shockingly high velocity...!
https://www.airarmsspares.com/air-arms-spares/ Reference the part number from the manual. The oring dimensions are in the site's description of the part number.
There are literally hundreds of threads already discussing propper air drying... Bottom line. Only truly dry air should be going into the gun or tank. If there is the slightest possibility that water could be flowing through the lines and that you must use gravity to prevent it from getting...
AW 46 hydraulic oil is an ISO 46 oil. It is absolutely terrible in a Yong Heng. Go ahead, use it all you want. Keep regurgitating outdated information and kill your compressor in the process.