SteveMongr

Some folks put it in 4-FullTime and leave it there all winter. According to the owners manual, there is no limit to how long full-time can be used. Also states there is no decrease in fuel economy.

KaMoore

In one of the threads on here I read a while back there was a guide for what gears were best with tire sizes. Can somebody point me in the right direction to find that guide? Thanks.

Ralph77

Probably should not have used the word constanly, over exaggeration, but you know how the side streets are not plowed as well as the main drags.

DSFB 96XJ

[QUOTE=XJwonders;3270480]3.07 if you have a manual trans and 3.55 if you have an automatic trans.

Very slim chance of a LSD in it.[/QUOTE
THAT WOULD BE THE DANA 35 WITH 3" AXEL TUBE?

rcguymike

It was a forum post IIRC. Probably a myth. But there are manufacturers that state not to use synthetics. My 2013 jeep says to not use synthetics in the RDU or PTU. Maybe it's because of the seals or something? Currie even states on their websites to never use any synthetic oil in their products...

At the bottom http://www.currieenterprises.com/9od...pen-3rd-member

Another non-synthetic manufacturer suggestion:
http://www.truehi9.com/oilingsystem2.html

Edit: maybe some synthetics mess with LSDs too? Maybe old formulations or something.

rcguymike

At least it's under warranty! Right?

Never heard of ice,blowing drifting snow or hills... Lols

This is why I jumped on a jeep with a 242 pretty much as soon as I found one. It really is safer and even while braking the 4wd will spread some torque around and prevent a lock up on one wheel to a point. Only thing is there may be bit more wear and tear on the u-joints and such. U-joints are cheap and fairly easy though.

There are times at least where I live that you can have patches of pavement showing and 10 feet later if you don't have 4wd you aren't going anywhere. Just use common sense. If you feel a little binding you might be better off not in 4wd, if there is a lot of binding take it out of 4wd. If you're traveling in a straight path it doesn't matter if you're in 8wd with all the diffs locked.

SatiricalHen

I don't know if I'd say warranty. I haven't contacted the company I got the install kits from yet to see if they would do anything about it, but the guy who did the gears said he would get the new bearing for me and get it in for free.

nardey11

I have a Chrysler 8.25 in the rear and I was wondering how much friction modifier i need to put I'm if I use Mobile 1 75w-90 with the modifier in it already, I read that it needs more.

SatiricalHen

do you have a Chrysler 8.25 or a Chrysler 8.25 with a limited slip?

nardey11

Limited slip according to my build sheet, now someone may have swapped it since I'm the 5th owner but I highly doubt it.

Basslicks

Just pull the diff cover off and look at it and you'll know if it has LSD or not. The carrier will be more squared off towards the outer portion nearest the bearing caps if it's LSD. If it's open, it will taper.



OPEN on the LEFT, LSD on the RIGHT

As far as the friction modifier, I'm sorry I don't know.

Ralph77

I am always hoping to find an 8.25 LSD in the boneyard. Is it true that if you spin one wheel and the opposite wheel spins in the same direction it is a LDS?

Basslicks

Little more to it than that... because that can also happen if the spider gears are seized up -or even welded together - inside the carrier. Best way to determine is just puling the cover. It's just a handful of bolts to remove, then pry the cover off with your screwdriver and if you see the carrier with spider gears and a tapered end, you'll know it's an open diff. Keep in mind, the squared-off one is a FACTORY LSD unit. A unit such as a Detroit True Trac will have internal clutch packs and you won't be able to see the spider gears at all... in which case - BONUS! Detroit LSD and Lockers are awesome.

Ralph77

Thank you for the info. Ripping the diff cover off in the two boneyards I deal with is no problem. They are customers of the auto parts store I work at. Pretty much let me do what I want in their yards. They are not pick and pull. Now a private party might prove to be a little more difficult. Thinking the only card I have to play is if you want to make the sale then...

Basslicks

lol... sometimes you can get lucky and there will be a tag attached to one of the diff cover bolts that will identify that it has LSD

See lower left of diff in this pic