Scavenger...Anyone?
Seasoned HDF Member
Joined: Nov 2009
Posts: 15,705
Likes: 22,718
From: Farmington ,MS
Complete and total waste of time. If you change your oil regularly it is not that dirty to start with. If you have 24 oz of oil left in there, you are not draining it correctly...but what do I know...still riding an 84 EVO that has never been rebuilt...
Road Captain
Joined: Feb 2010
Posts: 704
Likes: 0
From: NE Alabama
In the video, how is the engine getting oil flow and pressure if the oil is being dumped at the filter fitting, with the engine running, before reaching the main parts of the engine?
Maybe some versions are different, and dump the oil from the oil bag return line, but the version in the video isn't something I'd be very comfortable with.
Maybe some versions are different, and dump the oil from the oil bag return line, but the version in the video isn't something I'd be very comfortable with.
I think I'm right about this. The engine oil in a evolution is filtered after it leaves the engine unlike a TC which filters the oil before it enters the engine. So in the video that would be the return line that goes back to the tank via the pump thus making it safe. In either case depending how much oil you flush out you should make sure to keep the oil level up in the tank by adding fresh oil while the engine is running.
Road Master
Joined: Aug 2010
Posts: 1,067
Likes: 2
From: New Hampshire
How do you "correctly" drain your oil so there is nothing left in the sump?
I end up with 24 to 28 oz of oil if I do not "Scavenge" the sump.
Thanks
Outstanding HDF Member
Joined: Oct 2011
Posts: 3,492
Likes: 19
From: Illinois
Hey Ray, what's up Dude? I have and use the oil scavenger each and every oil change. I like it because it's a 100% clean oil change, it does have it's benefits over not using one. I know people says' It's been done this way since forever", and thats fine BUT your clean oil is dirty, contaminated 30 seconds after your oil change. To those who says its not needed or provides no benefits then just save an extra quart of the dirty oil you just took out and put that right back in your bike too. Also, it won't hurt your motor at all. You hit clean oil, and then shut the bike down, long before you run out of oil. Clean oil runs MUCH cooler than dirty oil. I was shocked the 1st time I used mine, at the amount of old dirty ,filthy oil that is left in your motor. I also have a larger oil cooler and it pumps the dirty oil out of that too. I will opt for a 100% clean oil change over a 75% clean oil change any day. It takes an extra quart of clean oil and an added 5 minutes to do your oil change. A piece of cake.
EDIT: Also, I pump out a little over a quart of old filthy oil when I use the scavenger.
EDIT: Also, I pump out a little over a quart of old filthy oil when I use the scavenger.
Last edited by tbonetony06; Jul 16, 2013 at 10:32 PM.
Seasoned HDF Member
Joined: Nov 2009
Posts: 15,705
Likes: 22,718
From: Farmington ,MS
Due to Harley's brilliant design, the kick stand is on the left...but the oil drains out of the right side of the tank...so if you do not lean the bike to the right when draining the oil...you leave a lot of oil in the tank. No way there is 24 oz of oil in the sump....it would puke it out the breather when you crank it.
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Road Captain
Joined: Aug 2007
Posts: 602
Likes: 12
From: Ma.
Hey Ray, what's up Dude? I have and use the oil scavenger each and every oil change. I like it because it's a 100% clean oil change, it does have it's benefits over not using one. I know people says' It's been done this way since forever", and thats fine BUT your clean oil is dirty, contaminated 30 seconds after your oil change. To those who says its not needed or provides no benefits then just save an extra quart of the dirty oil you just took out and put that right back in your bike too. Also, it won't hurt your motor at all. You hit clean oil, and then shut the bike down, long before you run out of oil. Clean oil runs MUCH cooler than dirty oil. I was shocked the 1st time I used mine, at the amount of old dirty ,filthy oil that is left in your motor. I also have a larger oil cooler and it pumps the dirty oil out of that too. I will opt for a 100% clean oil change over a 75% clean oil change any day. It takes an extra quart of clean oil and an added 5 minutes to do your oil change. A piece of cake.
EDIT: Also, I pump out a little over a quart of old filthy oil when I use the scavenger.
EDIT: Also, I pump out a little over a quart of old filthy oil when I use the scavenger.
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Road Captain
Joined: Aug 2007
Posts: 602
Likes: 12
From: Ma.
Exactly what Troupe said...
Road Master
Joined: Aug 2010
Posts: 1,067
Likes: 2
From: New Hampshire
Due to Harley's brilliant design, the kick stand is on the left...but the oil drains out of the right side of the tank...so if you do not lean the bike to the right when draining the oil...you leave a lot of oil in the tank. No way there is 24 oz of oil in the sump....it would puke it out the breather when you crank it.
I think you a spot on with "Due to Harley's brilliant design" being the real issue here. I change my oil on a lift, the oil tank is drained dry and I still get more than 24oz of extra oil out when scavenging the system.
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Road Warrior
Joined: Jun 2010
Posts: 1,337
Likes: 4
From: Sunny South Florida
No harm in using the scavenger and if it helps you sleep at night, why not. Personally I don't. I use quality filters and periodically send my oil to Blackstone to analyze it to ensure there is nothing to worry about.
I use Amsoil in my bike and without fail, every time I send it off to Blackstone it comes back the same. Minimal wear metals in the oil and the same recommendation, change filter, top off oil and continue use. I don't do this but this is just to say, that the oil has enough additives left and not enough foreign particulates after 5000 miles that they don't see a need to change it.
Not saying that you shouldn't change your oil or that there is "no need" for a scavenger, just that the "science" says that the oil is still good, why worry about the 1/2-1 qt that might still be lingering after you dump and refill the standard way.
I use Amsoil in my bike and without fail, every time I send it off to Blackstone it comes back the same. Minimal wear metals in the oil and the same recommendation, change filter, top off oil and continue use. I don't do this but this is just to say, that the oil has enough additives left and not enough foreign particulates after 5000 miles that they don't see a need to change it.
Not saying that you shouldn't change your oil or that there is "no need" for a scavenger, just that the "science" says that the oil is still good, why worry about the 1/2-1 qt that might still be lingering after you dump and refill the standard way.
Outstanding HDF Member
Joined: Oct 2011
Posts: 3,492
Likes: 19
From: Illinois
I am sure the oil is still good at 5000 too, especially Amsoil. It's not just the wear to the metal, it's also to pump out the old dirty oil. Dirty oil runs hotter. 1 mile after an oil change without scavenging it you new oil is dirty and that holds heat. Thats just simple science too. If I was going to put 100k on a bike I would prefer doing it running at temps around 185, 190 rather than 210 to 240. Thats me but not just my opinion, again, that too is science.
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