I have an ’07 FLHT. I just changed the fluids. When I removed the transmission drain plug, I noticed it was covered with metal shavings. It has over 55,000 miles, and I have been changing the fluids at around 5K for a long time. I use AMSOIL.
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The fine metal shavings are completely normal. They are a product of normal wear and nothing to be concerned over.
The Harley-Davidson transmission is a constant mesh transmission. That means that the hardened steel gears are constantly and directly spinning against one another. Some wear is inevitable. We suggest running a quality transmission fluid in every Harley-Davidson model. Quality fluids offer the most protection and even quiet these transmissions.
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In the post it’s always saying to use quality fluids, what brands are considered quality? I use Amsoil and Royal Purple. Curious as to other brands besides H-D!
Bravo !!! C'est super AMSOIL. Je suis Alsacien (FRANCE) prés Allemagne et Suisse
Amsoil severe gear 75-90 works, have used it in all our Harleys. Change it every 5,000.