OMG, this is one of the best builds I have ever seen! Jason...you, my friend, have got some serious skills...and I mean that! I can't close my mouth I am so amazed! Amazing work, man, seriously...I love it!

Thanks Chad!

I need to kick myself in the ass and get it ready for the snow.....

I'd like some input on diff fluids, never tuned a diff!

For the rear I want very limited slip, and for the front I think I want just a bit less slip than the rear.

This will be for winter running, snow and the likes.

Suggestions?

FOr standard 1/8 style diffs, I prefer 7k front, 1k rear, and 10k center (if there is a center). Try that, I think you will like it.

Ok, well center doesn't apply obviously, but the 7k front and 1k rear seems like the opposite of what I'm after.. and they both sound light-ish?

I was thinking like 7k front and 10k rear- I may be way off here, but I want the rear semi-spooled, the front stays in check if the rear is very limited slip. Not doubting your suggestions Chad, just want to be clear this is specifically for winter running, and I'm only wanting all 4 to work harder as opposed to a handling setup.

Do your recommendations remain?

I think you're still thinking too light... If you want a semi-locked rear I'd put in 100K. No, that isn't a typo. :smile: Then maybe 20-40K in front which should still give enough pull in the turns without affecting the steering response. Does that make sense?

I run 100K front and 300K rear (again, not a typo) on my GTP. It never "diffs out" in a corner even if I stay on power, and has no oversteer, like it would if the front was too tight.

Well, when the rear diff is tighter than the front, it affects handling in many ways, especially on loose terrain and definitely on the road...it makes the rear end want to swap places with the front (spin out). But, this is only a problem at higher speeds, and you have mentioned you like to crawl and climb and will be driving in snow, so you might want to run the samw weight in both diffs. The heavy front and light rear is more for the racer and handling, which is NOT what you want or need.

What's; 100k in a true 8th scale diff will lock it up tight, which is good if that's what the person wants, but I think triple-digit and high two-digit oils should only be used in the smaller, Traxxas/10th scale gears.

Is a GTP not a true 8th scale? It has a 4 spider diff...

They did look like racing #s to me, but great info come spring, thanks.

I follow that, the 1/10 will have higher loading, and require more resistance.

Yes, I am just saying I don't think that is what he needs.

Yes, I wondered about the trip-digit stuff. 500k would be a really stiff paste, correct?

And I do understand too thick in the front will result in very vague steering.

Thing is I was hoping to throw some on a Tower order and from what I see their selection sucks @ss... where to get?

Well, with the lighter oils, your inside wheel is always going to spin on ice/snow/muddy ground. There is not enough traction compared to dirt/asphault. Hence the need for heavier-than-normal fluids to limit the diff action. Especially with the larger tires and the power available from the large motor, I think a MT would benefit from the heavier fluids for winter driving.

Yeah 500K is VERY thick. The 300K barely wants to flow out of the container, and 100K is similar to cold honey.

As most who have run spools in the rear know, the heavier the oil in the rear diff, the less steering you have, and the truck will just push in turns, especially on slippery conditions.

You speak as if you have driven in the shete...

Great info all, and I think what I'm going to start with is some 300k in just the rear. The STP oil treatment I am currently using is already equivalent to
1k or more (a guess), so I will see how the front behaves.

I'll try to explain this just to see if it makes sense to anyone else: with the rear spooled, and the front and rear diffs directly connected, ie. no CD, the only way the front diff unloads is if BOTH rears are lit. Since that is more of an issue in the slick, that's really my only reason for maybe needing to thicken up the front as well. But still less than the rear, as discussed.

So where is the best place to get some 300K fellas?

I live in New England, of course I have! :lol: A Main has the whole range of oils if you want to try a few.

There is a fine line where you get traction between one wheel spinning, and both wheels spinning. The former is due to diff fluid being too light, and the latter is caused by a heavy throttle finger. Heavier fluid gives better traction on slippery surfaces. The rest is throttle control.

I'm just worried about his steering.

I honestly think 100K in the rear is not too heavy for a truck like that. 300K might be, but I guess we'll have to wait and see. :mdr:

Don't lose any sleep :lol: I'm leaving the front alone for now.

_nitro I only found 125k at AMain, and Losi Parts House carries 300k but are out of stock.

Ballz!

Well, the rear affects steering, almost more than the front does...

Absolutely, and winter is all about rear-steering!

But as what's (dammit what's your real name?) said, throttle control baby...

I have a much better idea where to start, thanks guys!

Hmmm... I swear I bought mine there. It was a while back so I guess they cut down their selection. ImpacktRC seems to carry the whole line of Ofna oils though.

:lol: Well, most people call me Steve... but I would accept Nikola, Thomas, Leonardo, Stephen, or Rube. :smile:

Well I'm not most people, so I'm gonna call you Dave!

Ok I thought I remembered someone using Steve. So it shall be.

Did you find me some diff fluid yet Dave?

I'm still looking lol.

Oh, good. You answered your own question! :lol:

And then there's always; if one doesn't work, try something else!

Haha TOUCHE Steve :mdr:

Edit will you... Im still thinking Dave.

I'll check out Impakt!

Fine. In light of our demicongruent naming scheme, I will call you Jared. Deal? :lol:

If you use 1/8 diffs (so no e-revo style diffs) I would look for 30k rear and 50k front. That's what I run on my Savage and MERV and it's good for bashing purposes.

Finally, someone who agrees with my "heavier in the front, lighter in the rear" diff oil. :)

We old geezers been doin' dat while you were still in diapers sonny.:lol:
So I would say YOU agree with what everyone has been doing before.

redshift
Since your truck is LST based, I will suggest what I was using in my LST XXL and that's 50k in front and 10k in the rear. Nard Cox said 50k front and 30k rear which is also a great suggestion. I did try 100k front and 50k rear and the diffs were way too stiff for good handling in general. Good for crawling but that's it.

Blasphemy! :lol: Hey whatever works for you, I guess! :smile:

Eh.. nah. :lol:

Demicongruent? Your glasses are held together by tape aren't they...

Impakt has nahting! Ofna didn't come up in their search... I keep looking.

No one is disagreeing, some of you have racing on the brain :rules:
I wonder how often you have to climb snowbanks in a race? In Alabama? :angel:

Some LST specific info is good yes. Ray was the 100/F 50/R specifically for snow running? Or get run in snow at all?

Nevermind... I'm stupid.

Found the Ofna stuff.

Haha. Well heavier in the front than in the rear is normal for racing truggies and buggies cars. When I was researching for fluids in my Savage 30/50 was the most used set-up, same with the MERV.

My LST never ran in snow, I ran it this spring and summer. To run in very cold weather this winter, I would suggest going with lighter diff fluids, like 30k front and 10k rear.