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Diff Silicone Oil and Top Speed Reduction

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BlueRidge1

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I was wondering if any of you guys noticed a reduction in top speed after putting the Ofna silicone goop in your diffs.

Let me know what weight you are using, too.

Thanks
 
the higer the weight of oil in the diffs the more power it takes from the engine to spin them. This does have an effect of top speed.
 
Thanks HumbodltBlazer. Any ballpark idea on 3000wt? Is it significant?

Any other ideas? I know more of you are out there.

El Pirata?
 
I'm running 70K in the front and 30K rear silicone in my savage. I didn't really notice much speed loss, but I don't run on pavement much. IMO, the diff lock oils make the Savage more mobile on rough (sometimes extremely rough) surfaces. What ya gain, I think, outweighs any slight loss in top speed (which isn't much).
 
hmm..i can only see the oil slowing you down while turning...as while going in a straight line the diff isnt "diffing" and so the oils would have no effect on resistance? in a way i can only see it helping..like error said it increases of-road mobility so it actually overall can only speed you up.
 
Originally posted by Error401
I'm running 70K in the front and 30K rear silicone in my savage. I didn't really notice much speed loss, but I don't run on pavement much. IMO, the diff lock oils make the Savage more mobile on rough (sometimes extremely rough) surfaces. What ya gain, I think, outweighs any slight loss in top speed (which isn't much).
Click to expand...
I agree completely. I am running 30k in the front, 100k in the center and 50k in the rear and I noticed the performance difference in terms of traction immediately. On hard surfaces you will lose a considerable amount of speed as the engine has to work harder to turn the internal portion of the diff as one wheel is turning faster than the other with both having about the same amount of traction. Off road it will be different in the sense that is one wheel spins faster than the other it just loses traction however the other wheel will keep the traction and thus les power will be wasted.
 
I would say that as long as you drive in a straight line, you won't lose top speed. The internal gears are only rotating when cornering and not when dring in a straight line. So I agree with alkyula...
 

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