Black oil issue !
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Intermediate
Joined: Jul 2022
Posts: 43
Likes: 20
From: California
Well if the motor was old and worn I might think that.
But the since it been totally rebuilt 700 miles ago and I noticed after the first 100 miles it seems strange that its turn black quickly after a oil change.
I just wonder if anyone else had this happen, or is this the way of the flathead???
Scotties.
But the since it been totally rebuilt 700 miles ago and I noticed after the first 100 miles it seems strange that its turn black quickly after a oil change.
I just wonder if anyone else had this happen, or is this the way of the flathead???
Scotties.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,530
Likes: 6,409
From: Honah Lee
Depends on who's oil you are using and how dirty the old oil was.
Now I bet I either sent this to an oil thread or a tin man with the latest flushing tool for only 19.99 plus shipping and handling.
Check your compression with a free loaner tool from AutoZone. Be sure it's warmed up and the throttle is wide open. The spark plug wires are grounded and the fuelpump fuse is pulled.
If it is low, do a bleed down test. You can then tell if it's valves or rings by listening for escaping air.
Now I bet I either sent this to an oil thread or a tin man with the latest flushing tool for only 19.99 plus shipping and handling.
Check your compression with a free loaner tool from AutoZone. Be sure it's warmed up and the throttle is wide open. The spark plug wires are grounded and the fuelpump fuse is pulled.
If it is low, do a bleed down test. You can then tell if it's valves or rings by listening for escaping air.
Last edited by Jackie Paper; Aug 3, 2022 at 01:53 PM.
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Joined: Jun 2015
Posts: 8,055
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From: Canada
Running rich will make the oil black. An engine thats not broken in will make the oil black. A tractor engine in a motorcycle will make the oil black. 700 miles isn't broken in so just ride it after you sort the carb issues in the other thread.
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Joined: Jun 2015
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From: Canada
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Joined: Apr 2008
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From: Sandpoint, Idaho
Depends on who's oil you are using and how dirty the old oil was.
Now I bet I either sent this to an oil thread or a tin man with the latest flushing tool for only 19.99 plus shipping and handling.
Check your compression with a free loaner tool from AutoZone. Be sure it's warmed up and the throttle is wide open. The spark plug wires are grounded and the fuelpump fuse is pulled.
If it is low, do a bleed down test. You can then tell if it's valves or rings by listening for escaping air.
Now I bet I either sent this to an oil thread or a tin man with the latest flushing tool for only 19.99 plus shipping and handling.
Check your compression with a free loaner tool from AutoZone. Be sure it's warmed up and the throttle is wide open. The spark plug wires are grounded and the fuelpump fuse is pulled.
If it is low, do a bleed down test. You can then tell if it's valves or rings by listening for escaping air.
Seasoned HDF Member
Joined: Apr 2010
Posts: 9,562
Likes: 7,912
From: Long Island, New York
I wouldn't worry about it, but I would switch to 60WT. I like Penn Grade 60, it is green. I use a transmission oil that is red. makes me happy to know which one is leaking, when they leak.
Which is all the time, but nice to know who is the bigger offender. Good luck.
Which is all the time, but nice to know who is the bigger offender. Good luck.