Oil drains slowly

[Evening Shade]

That is only indicating if you got the first litre/quart of oil out though. The dipstick doesn't go to the bottom of the pan.....

Should be measuring what your actually getting out by pouring into a measurable container. Like for myself the most I've ever been able to get out easily is 2.5litres.

You are correct. I've never measured how much oil I get out, but I will say this, it takes 4 quarts to fill it back up to the top of the full mark on the dipstick. I'm not sure what the official capacity is for the ZR4 engine, but I know its much less than the H5 and H6. I think the ZR engines have a relatively small oil pan and only hold roughly 4 quarts. I say this because it was also true of the ZR450 that was in my previous boat. I extracted the oil from dipstick tube on that boat, which I DO NOT recommend.

[GMLIII]

I use the same brass fittings shown above. But realize you actually need two separate fittings. One is a barbed threaded male brass fitting that you install into the extractor tube. Make sure the barb is the right size for your extractor hose and the threads are the same as the oil drain hose fitting. Then you need the barrel connector to connect the two male-to-male connections you have created (male on extractor tube, male on drain hose). I don't know the size of the threads off the top of my head. But you can measure the fitting on the boat. Mine is about 1/2" external diameter. See the picture below. If you are unsure, buy a few of them around that size and check them for thread fit on the boat before you install the fitting into your extractor hose. Then return the ones that don't work. They are only a few $. The drain hose is at the low point on the oil pan so suction there should remove ALL of the oil (if the engine is level). I pump the extractor another 10 times after most of the oil is out to pull out any sludge in the bottom of the pan. Then disconnect the extractor hose connection, replace the plug, and move on to changing the oil filter.

I actually took my oil extractor and all hoses to Lowe’s which made it easier to purchase the correct brass fittings

[nohlan_4]

Take a look at this video. He discusses oil pan drain plugs and residual oil about 2 min.s into the video. Makes sense if the drain plug is on the side of the pan. If you are only getting 2.5 L out of a 5.7 capacity, I would definitely try the suction method.

See the sound when he pulls the tube up to show when it’s done is the sound I get at 2.5l mark. Its odd. Like it’s pulling air at half way done. Like the take off for the drain isn’t low enough. I suck through the drain hose though. Not the dipstick tube. I tried the dipstick once and like stated it was not fun getting out. I was super worried it was going to be the engine coming out! But finally got lucky and it broke free.

[Evening Shade]

See the sound when he pulls the tube up to show when it’s done is the sound I get at 2.5l mark. Its odd. Like it’s pulling air at half way done. Like the take off for the drain isn’t low enough. I suck through the drain hose though. Not the dipstick tube. I tried the dipstick once and like stated it was not fun getting out. I was super worried it was going to be the engine coming out! But finally got lucky and it broke free.

Have you traced the entire length of the oil drain hose with your hand to make sure there are no loops or kinks in the drain hose? Like I said in an earlier post, my drain hose was kinked from the factory and would only allow tiny drops of oil to be extracted. Mine was kinked under the oil pan. You couldn’t see where it was kinked. I had to get my hand down under the oil pan, blindly find the drain hose with my hand and trace its entire length.

If your drain hose is looped or partially kinked and won’t allow the extractor tube to get all the way down to the oil pan fitting I can see how you wouldn’t get all of the oil out. You can also feel where the drain hose comes off the pan. It should be very low on the pan.

[greggmck]

I actually took my oil extractor and all hoses to Lowe�s which made it easier to purchase the correct brass fittings

That makes sense for fitting the extractor inside hose diameter to the correct barb fitting size. But you can cut off 1" of extractor hose for that. My Home Depot had SAE, fine, course, and metric thread fittings. Unless one can remove the oil drain hose from the oil pan it's not clear how you would match the threads to fit that end. I suppose you could drain the oil and remove the oil drain hose cap and match to that?

Sent from my SM-G965U using Tapatalk

[GMLIII]

That makes sense for fitting the extractor inside hose diameter to the correct barb fitting size. But you can cut off 1" of extractor hose for that. My Home Depot had SAE, fine, course, and metric thread fittings. Unless one can remove the oil drain hose from the oil pan it's not clear how you would match the threads to fit that end. I suppose you could drain the oil and remove the oil drain hose cap and match to that?

Sent from my SM-G965U using Tapatalk

Know that you brought the drain hose "cap" up, I took the cap to Home Dept to match up the threads . I did this prior to winterization a few years ago when I still owned my 2001 Sport Nautique. Drain cap thread on current Nautiques is the same as my 2001 Sport Nautique with the GT-40 engine.

[GMLIII]

Here is my Oil Extractor set up . I have a Motive branded extractor. Female brass fitting (this fitting directly screws into the Male brass fitting at the end of the oil drain line) attached to oil extractor hose. Male brass fitting attached to optional hard plastic hose which I use for other applications such as my outboard or tractor

I use the same brass fittings shown above. But realize you actually need two separate fittings. One is a barbed threaded male brass fitting that you install into the extractor tube. Make sure the barb is the right size for your extractor hose and the threads are the same as the oil drain hose fitting. Then you need the barrel connector to connect the two male-to-male connections you have created (male on extractor tube, male on drain hose). I don't know the size of the threads off the top of my head. But you can measure the fitting on the boat. Mine is about 1/2" external diameter. See the picture below. If you are unsure, buy a few of them around that size and check them for thread fit on the boat before you install the fitting into your extractor hose. Then return the ones that don't work. They are only a few $. The drain hose is at the low point on the oil pan so suction there should remove ALL of the oil (if the engine is level). I pump the extractor another 10 times after most of the oil is out to pull out any sludge in the bottom of the pan. Then disconnect the extractor hose connection, replace the plug, and move on to changing the oil filter.