Help, primary fluid
Outstanding HDF Member
Joined: Nov 2012
Posts: 2,422
Likes: 14
From: Fla
You can use almost any oil in the primary...
as long as there are no slip/friction modifiers, no detergents, and I wouldn't go above SAE 50W. Since you are in a northern state, where temps can get pretty low, you can use a multi-viscosity oil also. You could even use ATF Type F. But, it is recommended by many manufacturers to NOT use Dexron/Mercon ATF. Many people use synthetic oil(s) even. Primary oil is mostly used for oiling the chain, and prolonging the life of the clutch disks.
as long as there are no slip/friction modifiers, no detergents, and I wouldn't go above SAE 50W. Since you are in a northern state, where temps can get pretty low, you can use a multi-viscosity oil also. You could even use ATF Type F. But, it is recommended by many manufacturers to NOT use Dexron/Mercon ATF. Many people use synthetic oil(s) even. Primary oil is mostly used for oiling the chain, and prolonging the life of the clutch disks.
Last edited by Def Mute; May 10, 2014 at 11:31 PM.
Seasoned HDF Member
Joined: Jan 2007
Posts: 20,616
Likes: 4,440
From: anacoco, la
also, the rotella is jaso rated for wet clutch use, and can be had for about $13.00 a gallon. which is enough for 3+ changes.
Seasoned HDF Member
Joined: Oct 2012
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From: St.Louis Mo.
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Gary7
Primary/Transmission/Driveline/Clutch
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Feb 22, 2009 02:06 PM
