Originally Posted by MastUndSchotbruch
That's good to know, I certainly like the price point. I might still install it since all the other connections are already in place. And when it is bolted down I will know where to find it
Replying to my own post -- I know bad form.
First, thanks again (now also 'officially') to Smack for the first-hand report of the cheapo pump. I ordered one, it came on Friday and yesterday I went to the boat and put everything together again. This pump has no way to install it so after some contemplation I decided not to do it. Instead, I re-installed everything else: oil filter, pressure sensor, ball valve, board on which all is supported, plus all the electrical connections I had to disconnect in order to get to this. Then I attached the hose which originally came from the pump to the saloon directly to the ball valve. And used my new pump to do the oil change.
It worked great! Took just a few minutes. The specs on the pump say it should be much longer but this is probably because it is supposed to suck through the tiny dipstick hose while I have 3/8" hose all the way. Not too loud, either, maybe I have a different model? The oil was quite black so I decided to do another oil change after running the motor for 5 minutes.
Oh, and with some mixed anticipation and trepidation I also tried if I could suck out any oil through the dipstick after I had emptied it though my installation. Mixed feeling because while it would be a nice and simple solution, it would be a bummer if all my work would have been for nothing and I could have done oil change with just a stupid pump and a glorified straw. Well, I can report that no oil came out so my installation extracts more oil. Or at least as much, but faster.
I like this a lot. Now the only moving part that is installed permanently is the ball valve. If the $20.- pump gives up the ghost, no in-cave surgery will be required to replace it, just a click on the Amazon web page.
Thanks again to Smack for this suggestion!
The one thing that is still not done is that I would like to have a quick-connect on the pump end of the hose. I used to have a brass plug that I could unscrew to seal it but that clearly does not work. I used a hose clamp yesterday which works fine and would surely be acceptable for something done once or twice a year but I would like a neat solution to avoid residual drips out of the hose.
Something simple should work, there is obviously close to zero pressure so nothing difficult. I am thinking of using air connectors, they are dirt-cheap and I may even have some lieing around. Any concerns with that?