Bests & Worsts Reviews from Amazon

I have owned a Mityvac 7207 fluid evacuator plus and it works amazing for my cars' oil changes. I thought EWK fluid evacuator which is cheaper and would work as well as my Mityvac so i bought it for my midsize yatch's engine oil changes without carrying back and forth my Mityvac between home and the marina. Turn out, the EWK fluid evacuator is COMPLETELY JUNK when i used it first time yesterday! Somehow the rubber ring inside the container cannot create any pressure to suck out the oil. I gave EWK a call and there is not much help from them and it seems they tried to blame the issue on me. Since i am out of my returning window so i cannot return it. I am really pissed because i wasted my hard earned money on the EWK JUNK product. It is in the garbage can now. I DO NOT RECOMMEND EWK FLUID EVACUATOR TO ANYONE!