Ive got about 45000 mi. now So I think its time. :<br>Got syn. in the rear diff.<br>Every thing elese is as it came from the dealer. <br>???? is should I go syn. in everything. ??? ???<br>My 5 spd.tranny, seems to get tempermental.Mostly in the morning and cold drivetrain.<br>Sometimes it wont let me have 2nd. or rev.<br>Whats the oppinion on this.<br>What brand and weights ???<br>Synthetic or petrollium ??? ??? (Boy I need a spelling lesson)

 

Your tranny comes from the factory with synthetic in it. If you can't get the oil from Dodge you can get the same thing from GM.

 

I've got synthetic in both differentials, transfer case, and the transmission. I didn't use the factory recommended Castol Syntorq LT in the transmission. It's hard to find, except from dealerships, and the cheapest I could find it online was at standardtransmission.com for $54 per gallon. <br><br>I used Amsoil series 2000 75W-90 GL-5 gear lube and it was less than $30 for 4 quarts. They assured me it was compatible with yellow metals, ie the synchros. Been in since last fall and no problems. I know others have used Redline synthetic gear lube. I don't know about Mobil 1, but that's readily available at many retail locations.

 

I use the factory lube in my NV 4500. With a newer truck, I would susoect that 2nd and reverse syncos are the cause of your problem. It is hard to get into 1st when cold to start off?<br>John

 

I may be just over reacting 49000 mi. it only fights with me once and a while.<br>Gotta couple of side jobs to do this weekend.That will give me some extra $$$$, and next weekend I will change the fluids.<br>maybe even some new shocks <br>New fluids might just help. 8)