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2018 DF300 Oil Change Question

Old 06-30-2020, 05:38 PM
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Default 2018 DF300 Oil Change Question

We have a 34 Venture that we keep on a lift. We recently re-powered with Suzuki DF300s. I had Yamaha F250s and we were able to perform oil changes by utilizing a vacuum pump and pulling the oil through the dipstick hole. I have looked through a lot of threads and have not seen this done on the Suzuki 300s. I tried it but was not successful. Is there a way to easily change oil while the boat is on the lift or do I need to move it to a trailer for every oil change?
Old 07-02-2020, 10:21 AM
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Thoughts anyone?
Old 07-02-2020, 01:28 PM
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Originally Posted by dwolle View Post
Thoughts anyone?
I *think* you can do it... but I also believe the preferred method is still to do it from the drain at the bottom. That's how I do it. You can direct the flow into a 5 gal bucket with some tape. It's not horrible.

(I'm on a lift also)
Old 07-02-2020, 02:19 PM
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Originally Posted by dwolle View Post
We have a 34 Venture that we keep on a lift. We recently re-powered with Suzuki DF300s. I had Yamaha F250s and we were able to perform oil changes by utilizing a vacuum pump and pulling the oil through the dipstick hole. I have looked through a lot of threads and have not seen this done on the Suzuki 300s. I tried it but was not successful. Is there a way to easily change oil while the boat is on the lift or do I need to move it to a trailer for every oil change?
You can draw the oil out through the dip stick but it is not ideal because it doesn't get the gunk that builds up in the bottom. I would not do it this way all the time but every other time maybe. The other issue is gear oil, this must be changed every 100 hrs as well and that needs to be out of the water to do, so its easier to just pull the boat if you do not have a big stable raft to do all this. We do not do mobile service like this on the water because of possible oil spillage issues into the water, we haul all boats for service.
Old 07-02-2020, 03:32 PM
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Outboard Specialties - Thanks for the info. Definitely want to get all the gunk out. I'll figure out a way to do it the right way on the lift with another boat underneath. I really appreciate the information!

BTW - I am re-propping based on your recommendations (Suzuki 18.5 they had 22 pitch and it wouldn't come out of the hole without a lot of turns/weight distribution movement). Definitely not propped correctly from the dealer. They handle mainly bay boats here in Texas and did not have near the knowledge that you have on the 34 Venture. Also, will be lifting the motors. Currently in the top hole.

Thank you!
Old 07-03-2020, 03:42 AM
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even when mine is on the trailer, I tape a surgery drape (basically water proof rag) to the motor. I then tape that to the inside of a 5g bucket. It really helps to direct the flow into the bucket. Caution, when you first pull the plug it shoots out with some force.
Old 07-03-2020, 01:05 PM
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Thanks. I have done it on the trailer and agree with the force. I also utilize tape to keep it from dripping. I appreciate the feedback.

Old Yesterday, 07:19 AM
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Out of curiosity I used an extractor then pulled the plug to get the rest. This is how much was left. 2019 DF300AP.
Old Yesterday, 02:28 PM
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I'll give the extractor a try if that is all you are leaving in. May just need to see if I can get the tube in there effectively. Thanks for the feedbacck.

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