Chain case oil, '81 Ironhead
01-08-2018, 06:48 PM
Join Date: Oct 2013
Location: Wisconsin
Posts: 60
Chain case oil, '81 Ironhead
Now that I have the engine oil straightened out, what is the proper chain case oil?
Thanks!
01-08-2018, 09:34 PM
Join Date: Jun 2008
Location: London, ON Canada
Posts: 3,171
Most guys choose Harley Davidson Formula+
There are lots of other choices including some ATFs and competing products. I have stuck with the Formula+
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01-09-2018, 09:08 AM
Join Date: Nov 2006
Location: Heart of Dixie
Posts: 1,385
H-D Formula+ is what I use, too.
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