GL1800Riders - View Single Post - I know better but here goes !!!!!!
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post #10 of (permalink) Old 04-19-2017, 07:22 AM
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Join Date: Jul 2009
Posts: 506
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?
It's pretty typical for a motorcycle engine, especially one that was designed almost 20 years ago. Nothing unusual about it.

Don't compare against today's cars. They don't have shared crankcases and wet clutches.
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