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Barnette tells you what they recommend when you buy their clutch. My dad runs their clutch and I have the evolution industries clutch. They looked identical. To include color. We use drag specialties primary fluid. Evolution prefers atf but the compensator doesn't. We also only add 1 quart at a dry change
Edit ----I looked up the barnette site and dribble is correct, they say to use any type of primary fluid to include synthetic.
Last edited by hog95023; Dec 15, 2014 at 07:50 PM.
Oils
As far as what oils to use, we generally suggest following the manufacturer's recommendations. Use good quality motorcycle oils and lubricants. The main purpose of oils in a "wet" clutch application (as far as the clutch pack itself is concerned) is to act as a coolant. Oils flowing through the clutch plates help to keep the plates cooler, resulting in smoother clutch action and longer life. Using too heavy viscosity can cause plates to stick when cold.
Synthetic oil, by its nature, has extra lubricity. This can be a real advantage for the engine, but a disadvantage for a wet clutch. Synthetic oils can cause a worn clutch to fail. All Barnett wet clutches are designed to be run with synthetic or petroleum based oils. * Remember, the single best insurance you can have for your clutch and bike is to keep clean, good quality oil in it!
*There are several petroleum/synthetic blended oils that give excellent service in many motorcycle models
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