%%?????

 

Possibly in your owner's manual or service manual you will have a dry oil amount noted. Take the difference from the amount it takes to fill it and you should have an estimated amount of oil that remains in the crankcase.

 

That I don't know, but looking at the Scavenger Total Oil Change System, it takes about one quart to get pure clean oil out from the engine. Which is what I will be doing pretty soon. Hit my 5,000 mile mark. Waiting for the rain to stop and get a little warmer, then take her out, get her nice and warm and do the change with the Scavenger System.

 

How does the system work?

 

Here is the web site where I ordered mine. Looks like it does a good job. Watch the video. For new V Twins and earlier EVO's.

https://roguechopper.com/

 

Only a few ounces unless you have an oil scavenging problem are present in the crankcase. This is a dry sump system, you are not draining the crankcase.

 

If you have ever split a set of HD crankcases you will know it is only a few ounces.

Your engine will not last one minute longer if you use the scavenger system, but you will throw a lot of good oil away.

 

After watching that video from the scavenger web site. If your oil is that color when you change it you have other problems that any scavenger kit will not solve. And your not changing it often enough.

 

You spend some of your money for something of questionable benefit. Engines the world over have got by without such things for well over a century!

 

Part of that "Visual Image" of there being a quart of dirty oil left, owes to "mixing" during the flushing process, I'm sure you'll understand. 8 ounces of dirty oil mixed with 24 ounces of clean oil = 1 quart of dirty oil.

Also, new oil becomes re-contaminated from the minute you re-start your engine with concentrations gradually increasing over time until reduced again with your next oil/filter change. Scavenging no doubt works but what does it really give you ? According to the law of exponential growth, you'd be running cleaner oil, on average, if you just changed it say, 250 mi sooner vs scavenging the remaining few oz of oil out of the system at every change. This will further save you the cost of a "Puck" + 3/4 quart of wasted oil + the additional diddling around with each change.

IMHO scavenging is like giving an enema to a dead man. It won't improve the situation but it can't hurt.