Join Date: Jan 2007
Thanked 2 Times in 2 Posts
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I'm just guessing but it sounds like you overdid it when you packed the grease. Which will cause it to churn around in there building up friction and resistance. I don't know about EMS but the Dynatrac instructions are pretty clear on the proper way to pack the bearings.
I picked up an easy 2 mpg with my freespins running Amsoil Series 2000 racing grease and couldn't be happier. Most people I've seen have picked up 1-2 mpg with freespins. They do get warm after even a short trip but they never get so hot that I can't hold my hand on them.
Freespin hub claims of better mpg are not phony like 99% of the stuff we buy out there on the diesel performance market making such false claims. There's absolutely no reason why you shouldn't see a minimum 1 mpg increase with your hubs. I think you're gonna need to pull your hubs off and do the grease over again and see what happens. The space between the two bearings needs grease in there to keep the bearings from slinging their packed grease out but you don't want so much grease gobbed up there in between them that its dragging on the spindle. That grease's only function is to keep it from flying out of the bearings not lubrication.
2007 Ram 2500, SLT Big Horn, Mineral Grey, 4WD, 5.9, BMK11 bypass, G56, 285/70/17, GV overdrive, D'Trac manual hubs, Smarty Jr, 6" Wwhistler, 4" turboback, LED's
2003 T600 Kenworth, C15 bridge, 13sp Eaton, 3:70Eaton rears, 22.5 lopros
Last edited by Dsljnki07ctd5.9; 09-03-2007 at 03:21 AM.