GL1800Riders - View Single Post - I know better but here goes !!!!!!
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post #5 of (permalink) Old 04-18-2017, 08:47 PM
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Join Date: Nov 2003
Location: Clearwater, Fl
Posts: 11,882
Originally Posted by Rusty360 View Post
I normally use Mobil 1 (15/50)

Just curious the manual calls for 10W30 or 10W40 why such a heavy weight oil?

20/50 was a recommended weight for the early 1800's.
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