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post #1 of 2 (permalink) Old 06-17-2014, 11:09 PM Thread Starter
Join Date: May 2014
Location: Houston, Tx
Posts: 83
Royal Purple lubricant

Has anyone used Royal Purple 15W-40 for the engine and tranny? I use it regularly on my Diesel and it words great. I am considering using on my 2012 Road Glide.
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post #2 of 2 (permalink) Old 06-17-2014, 11:17 PM
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Join Date: Dec 2012
Location: Cold Lake Alberta Canada
Posts: 61
I tried their 20w50 oil in my 88cid softail and found it to be to thin. Once the oil got hot my valve train was really noisy. Put regular oil in it and the extra noise went away.
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