redline
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Tourer
Joined: Aug 2008
Posts: 379
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From: Tennessee
redline
I have a new to me ultra. The dealer has syn3 in all 3 holes. I used redline in my previous Ultra Classic and preferred that. So my question when draining trans fluid then adding the redline, there will be some residue from syn3 left in there will the mix alter the redline or will it need 2 changes to get rid of the old stuff. jeff
Road Master
Joined: Feb 2005
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From: Northern Kentucky
Bill
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Joined: May 2015
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From: mid Michigan
After oil stops flowing heavy crank motor over, as soon as it starts shut off. I do this twice every oil change now to get that extra 1/3 to 1/2 a quart left behind in sump. I let it drain for at least a hour after that, mostly to let filter drain as I put hole in end to drain so don't make as big of mess. Draining overnight doesn't help get much if any more oil out.
Elite HDF Member
Joined: Mar 2014
Posts: 4,214
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From: Prior Lake, MN
From the Red Line FAQ:
Q: Should I flush my engine or driveline before using Red Line's synthetic lubricants?
A flush isn't necessary or advised, as Red Line's products are compatible and will mix with other synthetics and petroleum products.
Q: Should I flush my engine or driveline before using Red Line's synthetic lubricants?
A flush isn't necessary or advised, as Red Line's products are compatible and will mix with other synthetics and petroleum products.
Outstanding HDF Member
Joined: May 2015
Posts: 2,172
Likes: 377
From: Georgia
After oil stops flowing heavy crank motor over, as soon as it starts shut off. I do this twice every oil change now to get that extra 1/3 to 1/2 a quart left behind in sump. I let it drain for at least a hour after that, mostly to let filter drain as I put hole in end to drain so don't make as big of mess. Draining overnight doesn't help get much if any more oil out.
If you want to get all the oil out of the engine, including the sump, without risking damage there's a system that will do it.
https://roguechopper.com/
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